come on in

Idioms

Please enter, as in Come on in, the door's open. This phrase is simply a friendly request to enter one's house or some other place. The related come on in, the water's fine originated as an encouragement (or, sometimes, a command) to a reluctant or fearful swimmer but has been extended to other activities, as in Come on in, the water's fine—this is a great office to work in!

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Old, who had come on in the 64th minute, received a cross and only needed to tap in to level the score.

From Barron's • Nov. 16, 2025

If you’re punchdrunk and disoriented this week, come on in.

From Slate • Feb. 1, 2025

Fiona Brown and Jane Ross also come on in Serbia but are in from the start tonight which should add some much needed firepower up top.

From BBC • Apr. 9, 2024

Backup Jacoby Brissett has come on in relief each of the last two weeks and nearly led the team to a comeback victory each time.

From Washington Times • Dec. 26, 2023

The lights had come on in the room, but Ray Charles was still playing through the speakers.

From "Night Owls" by A.R. Vishny

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023