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TOEIC · Customer ServiceB1B2

TOEIC Customer Service Vocabulary

50 high-frequency business English words for the customer service context. Customer Service — 50 words. Inquiries, complaints, warranties, and service interactions. Heavily tested in TOEIC Parts 2, 3, and the short email texts in Part 7.

TOEIC Essential Vocabulary

Customer Service: 50 Business Words

Tap any word to open its flashcard, forms, collocations, and linked exercises. Use the study tools to test yourself, run a flashcard deck, or take a quick quiz.

Customer Service. Customer Service — 50 words. Inquiries, complaints, warranties, and service interactions. Heavily tested in TOEIC Parts 2, 3, and the short email texts in Part 7.

0 / 50 mastered
inquirynounˈɪnkwəri
n inquiry / enquiryv inquire

A formal request for information about a product, service, or topic

Collocationsa customer inquirya general inquiryrespond to an inquirya sales inquirya written inquiry

Thank you for your inquiry — a member of our team will respond within twenty-four hours.

warrantynounˈwɔːrənti
n warrantyv warrantadj under warranty

A written guarantee promising to repair or replace a product if it fails within a stated period

Collocationsa two-year warrantyunder warrantyan extended warrantya limited warrantya manufacturer warranty

The product carries a two-year warranty against manufacturing defects.

refundnoun / verbˈriːfʌnd
n refundv refundadj refundable

Money paid back to a customer when they return goods or cancel a service

Collocationsa full refundrequest a refunda partial refunda refund policyissue a refund

Customers may request a full refund within thirty days of purchase with proof of receipt.

resolveverbrɪˈzɑːlv
n resolutionadj resolved

Find a successful answer or solution to a problem or difficult situation

Collocationsresolve the issueresolve a complaintresolve a disputequickly resolveresolve the problem

Our team is working to resolve the delivery issue as quickly as possible.

complaintnounkəmˈpleɪnt
n complaintv complainn complainant

A statement that expresses dissatisfaction about something or someone

Collocationsa customer complainta formal complaintfile a complainthandle a complainta written complaint

Customer complaints are reviewed weekly by the service quality team.

feedbacknounˈfiːdbæk
n feedback

Comments or opinions given to help someone improve a product or service

Collocationscustomer feedbackpositive feedbacknegative feedbackprovide feedbackcollect feedback

Your feedback helps us improve the quality of service we provide.

satisfactionnounˌsætɪsˈfækʃən
n satisfactionv satisfyadj satisfiedadj satisfactory

A feeling of pleasure caused by having what is wanted or needed

Collocationscustomer satisfactiona satisfaction surveyjob satisfactiona satisfaction guaranteea high satisfaction rate

Customer satisfaction ratings have improved significantly since the new system was introduced.

dissatisfiedadjectivedɪsˈsætɪsfaɪd
adj dissatisfiedn dissatisfaction

Not happy or pleased because something is not as good as it should be

Collocationsdeeply dissatisfieda dissatisfied customerfeel dissatisfiedextremely dissatisfiedremain dissatisfied

Several customers expressed feeling dissatisfied with the length of the waiting time.

servicenoun / verbˈsɜːrvɪs
n servicev service

The help and support that a business gives to its customers before and after a sale

Collocationscustomer servicea service deskafter-sales servicegood serviceservice quality

Our customer service team is available around the clock to assist you.

supportnoun / verbsəˈpɔːrt
n supportv supportadj supportive

Help or assistance given to someone using a product or service

Collocationstechnical supportcustomer supportsupport stafftwenty-four-hour supportonline support

Technical support is available by telephone, email, and live chat.

assistancenounəˈsɪstəns
n assistancev assistn assistant

Help given to someone who needs support to do or understand something

Collocationsimmediate assistancetechnical assistanceprovide assistancerequest assistanceprofessional assistance

Please call our helpline if you require immediate assistance with your order.

helplinenounˈhɛlplaɪn
n helpline

A telephone service that gives advice and information about a particular subject

Collocationsa customer helplinea free helplinea 24-hour helplinecall the helplinea national helpline

Our 24-hour helpline provides immediate support for urgent customer concerns.

representativenounˌrɛprɪˈzɛntətɪv
n representativev represent

A person whose job is to speak for or act on behalf of a company or group

Collocationsa customer service representativea sales representativea senior representativea regional representativean authorized representative

A customer service representative will contact you within the next business day.

agentnounˈeɪdʒənt
n agentn agency

A person who works for a company by speaking with customers and handling their requests

Collocationsa customer agenta sales agenta real estate agenta senior agenta service agent

Our agents are trained to handle complex inquiries professionally and efficiently.

respondverbrɪˈspɑːnd
v respondn responseadj responsive

Give a written or spoken answer to a question, request, or message

Collocationsrespond to an emailquickly respondrespond promptlyrespond to feedbackrespond to complaints

We aim to respond to all customer inquiries within twenty-four hours.

acknowledgeverbəkˈnɑːlɪdʒ
v acknowledgen acknowledgement

Confirm that you have received a message, document, or item

Collocationsacknowledge receiptacknowledge the emailkindly acknowledgeacknowledge the orderformally acknowledge

Please acknowledge receipt of this email at your earliest convenience.

apologizeverbəˈpɑːlədʒaɪz
v apologizen apology

Tell someone that you are sorry for something you did or that has happened

Collocationssincerely apologizeapologize for the delayapologize for the inconvenienceformally apologizeapologize to the customer

We apologize sincerely for any inconvenience this delay may have caused you.

courteousadjectiveˈkɜːrtiəs
adj courteousadv courteouslyn courtesy

Polite, respectful, and considerate in manner toward other people

Collocationscourteous servicealways courteousa courteous responsea courteous mannerremain courteous

Our staff are trained to be courteous and professional at all times.

politeadjectivepəˈlaɪt
adj politeadv politelyn politeness

Showing good manners by speaking and behaving in a respectful way

Collocationsextremely politea polite replya polite toneremain politea polite request

Remaining polite during difficult conversations is a core service skill.

patientadjectiveˈpeɪʃənt
adj patientadv patientlyn patience

Able to wait calmly for something or to deal with problems without getting upset

Collocationsbe patientremain patienta patient approachextremely patientpatient listening

Please be patient while our team investigates the issue with your account.

helpfuladjectiveˈhɛlpfəl
adj helpfuladv helpfullyv help

Useful in giving the help that someone needs in a particular situation

Collocationsextremely helpfula helpful suggestionhelpful advicea helpful responseparticularly helpful

The support staff were extremely helpful when I experienced difficulty with the checkout process.

friendlyadjectiveˈfrɛndli
adj friendlyn friendliness

Behaving in a kind and pleasant way that makes people feel comfortable

Collocationsa friendly mannera friendly greetingfriendly staffa friendly tonea friendly service

Our call centre staff are known for their friendly and professional manner.

professionaladjectiveprəˈfɛʃənəl
adj professionaladv professionallyn professionalism

Relating to a job that requires special training, or showing the qualities expected of one

Collocationsa professional mannera professional approachhighly professionalprofessional serviceprofessional advice

All interactions with customers must be handled in a professional manner.

responsiveadjectiverɪˈspɑːnsɪv
adj responsiveadv responsivelyn responsiveness

Quick to react or reply to what someone says or asks

Collocationshighly responsivea responsive teama responsive designresponsive serviceresponsive support

The support team is highly responsive, usually replying within the first hour.

promptadjectiveprɑːmpt
adj promptadv promptlyn promptness

Done or acting quickly, without any delay

Collocationsa prompt responseprompt attentiona prompt replyprompt serviceprompt delivery

Thank you for your prompt response to our email yesterday afternoon.

redeliverynounˌriːdɪˈlɪvəri
n redeliveryv redeliver

A second attempt to deliver a package after the first attempt was unsuccessful

Collocationsarrange a redeliveryrequest a redeliverya free redeliverya redelivery servicea scheduled redelivery

If no one is home, the courier will arrange redelivery for the following business day.

issuenoun / verbˈɪʃuː
n issuev issue

A problem or important topic that needs to be discussed or solved

Collocationsan important issueresolve the issuea technical issuea major issuea recurring issue

The issue with your order has been identified and will be resolved today.

problemnounˈprɑːbləm
n problemadj problematic

A situation or thing that causes difficulty and needs to be dealt with

Collocationssolve a problema minor problema serious problema recurring problema technical problem

We take every problem reported by our customers extremely seriously.

concernnoun / verbkənˈsɜːrn
n concernv concernadj concerned

A worry about something that may have an unpleasant or unwanted result

Collocationsaddress concernsraise concernsa serious concerna customer concerna major concern

We understand your concerns and are taking steps to address them immediately.

querynoun / verbˈkwɪri
n queryv query

A question, especially one asked in order to find information

Collocationsa billing querya customer queryanswer a querya general querya written query

Please send any billing query directly to our accounts department for assistance.

requestnoun / verbrɪˈkwɛst
n requestv request

An act of asking politely or formally for something

Collocationsa customer requesta written requesta refund requestsubmit a requesta special request

Your request for a refund has been processed and should appear shortly.

replaceverbrɪˈpleɪs
v replacen replacement

Put a new item in place of something old, broken, or unwanted

Collocationsreplace the itemreplace the productreplace a partfree replacementa replacement order

We will replace the defective item free of charge within five working days.

hotlinenounˈhɑːtlaɪn
n hotline

A direct telephone line set up for a particular emergency or urgent service

Collocationsa customer hotlinea 24-hour hotlinecall the hotlinea free hotlinea special hotline

The 24-hour customer hotline handles urgent technical issues outside business hours.

returnnoun / verbrɪˈtɜːrn
n returnv returnadj returnable

The act of sending something back to where it came from, often for a refund

Collocationsa return policya return forma free returnan easy returna product return

Please complete the return form and include it with the item being sent back.

receiptnounrɪˈsiːt
n receiptv receive

A piece of paper proving that you paid for a product or service

Collocationsthe original receipta sales receiptkeep the receiptan itemized receiptpresent the receipt

Please present your original receipt when returning any item for a refund.

ordernoun / verbˈɔːrdər
n orderv order

A formal request for goods or services to be supplied to a customer

Collocationsplace an ordera customer orderan online ordera recent orderthe order number

Your order has been dispatched and should arrive within three to five days.

deliverynoundɪˈlɪvəri
n deliveryv deliver

The action of bringing goods, letters, or packages to a particular person or place

Collocationsstandard deliveryexpress deliveryfree deliverya delivery datenext-day delivery

Standard delivery takes three to five working days within the region.

shipmentnounˈʃɪpmənt
n shipmentv shipn shipping

A group of goods that are sent together to a person or place

Collocationsa large shipmentan overseas shipmenta delayed shipmenttrack the shipmenta daily shipment

Your shipment will be tracked automatically and updates sent to your email.

trackverbtræk
v trackn tracking

Follow the progress of something, such as a package, by checking it regularly

Collocationstrack an ordertrack a shipmenttrack progresseasily tracka tracking number

Customers can track their orders online using the reference number provided.

defectiveadjectivedɪˈfɛktɪv
adj defectiven defect

Not working correctly because of a fault or imperfection in manufacturing

Collocationsa defective producta defective itema defective parta defective unita defective battery

Any defective item will be replaced free of charge upon receipt.

faultyadjectiveˈfɔːlti
adj faultyn fault

Not working properly or made with a mistake that prevents it from functioning

Collocationsfaulty goodsa faulty producta faulty itema faulty appliancea faulty connection

Please return any faulty goods to the point of purchase with proof of payment.

guaranteenoun / verbˌɡærənˈtiː
n guaranteev guarantee

A promise that something will be done or will work properly, often in writing

Collocationsa money-back guaranteea satisfaction guaranteea lifetime guaranteea written guaranteea guarantee period

All products come with a money-back guarantee within thirty days of purchase.

couriernounˈkʊriər
n courier

A company or person whose job is to deliver packages and important documents

Collocationsan overnight couriera private couriera courier serviceby couriera courier company

The replacement item will be sent by overnight courier at no additional cost.

redemptionnounrɪˈdɛmpʃən
n redemptionv redeemadj redeemable

The act of exchanging something such as points or vouchers for goods or services

Collocationspoints redemptiona redemption codevoucher redemptiona redemption perioda redemption offer

Points redemption is available for flights, upgrades, and selected partner products.

rewardnoun / verbrɪˈwɔːrd
n rewardv rewardadj rewarding

Something valuable that is given in return for good service or loyal behavior

Collocationsreward pointsa reward programreward loyaltyearn rewardsa generous reward

Members earn reward points on every purchase, which can be redeemed for discounts.

escalateverbˈɛskəleɪt
v escalaten escalation

Pass an unresolved problem on to a more senior person for further action

Collocationsescalate the issueescalate the complaintescalate to managementescalate the matterescalate the case

If the issue is not resolved, the case will be escalated to a senior manager.

follow upverbˌfɑːloʊ ˈʌp
v follow upn follow-up

Take further action after an earlier conversation, message, or event

Collocationsfollow up on inquiriesfollow up promptlyalways follow upfollow up by emailfollow up on complaints

Our team will follow up on your complaint within two business days.

escalationnounˌɛskəˈleɪʃən
n escalationv escalateadj escalated

The process of passing an issue to a higher level of authority for resolution

Collocationsan escalation pathan escalation processan escalation policya formal escalationan escalation procedure

Complex cases follow a formal escalation path to the senior support team.

testimonialnounˌtɛstɪˈmoʊniəl
n testimonial

A written or spoken statement that praises a product, service, or person

Collocationsa customer testimoniala glowing testimoniala video testimoniala client testimonialcollect testimonials

Positive customer testimonials are displayed on our website under the reviews section.

callbacknounˈkɔːlbæk
n callbackv call back

A return phone call made by a customer service representative to a customer

Collocationsrequest a callbackschedule a callbacka callback servicea callback timearrange a callback

A senior agent has scheduled a callback for three o'clock this afternoon.

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