Join: meaning, definition, and synonyms

Join is a common word with several different meanings. It can mean to connect things, to become part of a group, or to bring things together so they meet or fit. It is also a noun in technical or formal use.

Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.

Pronunciation

AI-generated pronunciation audio (OpenAI).

Accent: General American English

IPA: /dʒɔɪn/

Easy pronunciation: JOIN (approximate spelling).

Stress: One syllable, so it is stressed on the only syllable.

Verb meaning to be or become joined or linked.

Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.

Join Meaning

to connect or become connected

Part of speech: verb

Definition: be or become joined or united or linked

Example: The two roads join here.

Synonyms for this meaning:

connect — A direct substitute when two things are linked together.
link — Works well for things joined by a connection or chain.
unite — Good when separate things become one, though it is a bit more formal.

Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.

Other Meanings of Join

Meaning 2

to become a member of a group

Part of speech: verb

Definition: become part of; become a member of a group or organization

Example: She joined the company last year.

Meaning 3

to meet or come together at a point

Part of speech: verb

Definition: make contact or come together

Example: The two rivers join near the city.

Meaning 4

to put things together so they connect

Part of speech: verb

Definition: cause to become joined or linked

Example: Join the two pieces with glue.

Meaning 5

the place or line where things meet

Part of speech: noun

Definition: the shape or manner in which things come together and a connection is made

Example: Check the join for gaps.

Synonyms for this meaning:

joint — A common word for the place where two things meet.
junction — Used for a point where things meet, especially roads or parts.
juncture — More formal; refers to a point where things join or meet.
articulation — Technical or formal, especially in anatomy or mechanics.

Meaning 6

the mathematical combination of sets

Part of speech: noun

Definition: a set containing all and only the members of two or more given sets

Example: In set theory, the join of two sets is their union.

Synonyms for this meaning:

union — The standard mathematical term for this sense.

Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.

Join Synonyms

Similar Meaning

connect
link
unite

the place or manner where things meet

joint
junction
juncture
articulation

mathematics: the set formed by combining sets

union

Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.

Common Mistakes

Using join to mean "meet someone socially" in place of become part of a group.
Confusing the verb join with the noun join/joint in technical writing.
Using union as a general synonym for join outside the mathematics sense.

Reviewed with OpenAI Decisions. Assessment: uncertain — manual review needed. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.

Frequently Asked Questions

What is the main meaning of join?

The most common meaning is to connect things or to become connected.

Is join the same as connect?

Often, yes. Connect is a very close synonym when join means to link things together.

Can join mean become a member?

Yes. For example, you can join a club, team, or company.

What is the noun join?

As a noun, join refers to the place or way two things meet or are connected.

Reviewed with OpenAI Decisions. Assessment: accurate. Checked: 2026-10-21. AI assessment; not a guarantee of accuracy.