Lesson

Family & Friends

Family relationships and friendship vocabulary

≈ 15 min 8 block(s)

Text

Family & Friends Vocabulary

This lesson builds your vocabulary related to family members and different types of friends and work relationships. You'll learn common nouns, collocations, and how to use these words in professional contexts.

  • Names for family members (immediate and extended)
  • Words for social and professional connections (friend, colleague, acquaintance, partner)
  • Typical collocations and example sentences for work situations

Table

Common Family & Friends Words

Word Part of speech Meaning Example
mother noun a female parent My mother attended the client meeting yesterday.
partner noun a spouse or romantic companion; also a business partner Her partner will join the board meeting next week.
colleague noun a person you work with I discussed the project with a colleague in accounting.
acquaintance noun someone you know slightly but who is not a close friend He is an acquaintance from a previous conference.
sister-in-law noun the sister of your spouse or the wife of your sibling My sister-in-law is an HR manager at a tech company.
cousin noun a child of your aunt or uncle A cousin of mine works in logistics for our partner firm.
extended family noun family outside the immediate family (grandparents, aunts, uncles, cousins) We invited our extended family to the annual company picnic.

Tip

How to use family & friend terms in professional English

Use precise vocabulary and appropriate register depending on the situation:

  • Use 'colleague' for coworkers and 'partner' for a business partner or romantic partner (context clarifies meaning).
  • Use 'acquaintance' to describe a weak social connection, not a friend.
  • Use possessives for family relations: 'my sister', 'their parents', 'the company's founder and his brother'.

When in doubt in a business setting, prefer neutral terms like 'colleague' or 'partner' to avoid overfamiliarity.

Example

Examples in context

My sister led the marketing team during the product launch.

I invited my closest friends to the company anniversary dinner.

Her brother-in-law works in finance at a multinational firm.

We asked our parents to review the sponsorship proposal.

Tip

Common mistakes to avoid

Learners often make predictable errors when using family and friend vocabulary:

  • Using 'family' as plural without adjusting verbs: 'My family are' vs 'My family is' — choose according to meaning (collective vs individuals).
  • Confusing 'acquaintance' with 'friend' — they imply different closeness levels.
  • Incorrect word order in compound relations: write 'sister-in-law' or 'brother-in-law' (hyphenation and pluralization rules apply: 'sisters-in-law').
  • Using informal terms in formal contexts — prefer neutral words (e.g., 'colleague' instead of 'workmate' in reports).

Focus on countability, register, and correct compound forms.

Quiz

Choose the correct sentence:

Hint: Check compound punctuation and subject-verb agreement.

Quiz

Complete: Her _____ helped her prepare the presentation.

Hint: Think about a work relationship term.

Quiz

Which word is closest in meaning to 'acquaintance'?

Hint: Focus on the level of social closeness compared to 'friend'.

Key Points

Vocabulary

colleague

noun CEFR B1 //ˈkɒliːɡ/ /ˈkɑːliːɡ//

a person you work with, especially in a profession or business

I asked a colleague to review the report before submission.

Vocabulary

partner

noun CEFR B2 //ˈpɑːrt.nər/ /ˈpɑːrtnər//

a spouse or romantic companion; or a person you work with in business

The company hired a new partner to expand its European operations.

Vocabulary

acquaintance

noun CEFR B2 //əˈkweɪn.təns//

a person one knows slightly, but who is not a close friend

I ran into an acquaintance from university at the networking event.

Vocabulary

sister-in-law

noun CEFR B1 //ˈsɪs.tər ɪn lɔː/ /ˈsɪstər ɪn lɔː//

the sister of your spouse or the wife of your sibling

My sister-in-law is presenting at the regional seminar.

Vocabulary

cousin

noun CEFR A2 //ˈkʌz.ən//

a child of your aunt or uncle

One of my cousins works in procurement for a supplier.

Vocabulary

extended family

noun CEFR B1 //ɪkˌstɛn.dɪd ˈfæm.əl.i//

family beyond the immediate family, including grandparents, aunts, uncles, and cousins

We invited our extended family to the annual gathering.