go in

verb

went in; gone in; going in; goes in

intransitive verb

1

: to make an approach (as in attacking)

2

a

: to take part in a game or contest

b

: to call the opening bet in poker : stay

3

of a celestial body : to become obscured by a cloud

It got cooler once the sun went in.

4

: to form a union or alliance : join

—often used with with

asked us to go in with them

Phrases

go in for

1

: to give support to : advocate

2

: to have or show an interest in or a liking for

3

: to engage in : take part in

go in on

informal

: to help pay for something

We all went in on the gift.

Synonyms of go in

• assault
• attack
• raid
• turn (on)
• storm
• jump (on)
• set on
• strike
• set at
• set upon
• descend (on or upon)
• fly at
• rob

Examples of go in in a Sentence

law enforcement officials decided to wait before going in on the barricaded gunman

Recent Examples on the Web

The very different siblings, who are each going through their own personal life challenges, have naturally gone in separate directions over the years, and the idea of spending 10 days cooped up on a river cruise together makes each Keller child cringe for their own reasons. —Randall Colburn, Entertainment Weekly, 7 Dec. 2025

Have a fire pit going in our backyard? —Tereza Shkurtaj, PEOPLE, 7 Dec. 2025

The book explains the problem, the kids’ science solution (be sure it’s not stuck on boats or anything that goes in the water), and an imaginary solution. —Mary Ann Grossmann, Twin Cities, 7 Dec. 2025

Telasco Segovia replaced Rodriguez in the 56th minute and Yannick Bright went in for Silvetti in the 78th. —Miami Herald, 7 Dec. 2025

Word History

First Known Use

1812, in the meaning defined at sense 1

Rhymes for go in

• coan
• kohen
• rohan
• rowan
• rowen
• bryozoan
• metazoan
• protozoan
• minoan
• samoan