come on in

Idioms  

1. 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!

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Example Sentences

That's why I think Tuchel will change it up, and Bukayo Saka and Marcus Rashford have definitely done enough when they have come on in both games to get a chance to start.

From BBC • Jun. 25, 2026

Nebius will pay up to $2.6 billion over the term of the agreement, which is expected to come on in three phases, each with a supply term of 10 years.

From Barron's • May 21, 2026

After sending out a letter last month urging people having trouble with the online system to come on in, Adjian said, the administration then eliminated any kind of walk-in appointments.

From Los Angeles Times • Apr. 9, 2025

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

From Slate • Feb. 1, 2025

“And tell your friends to turn off the walkie-talkies. I appreciate their ingenuity, but they might as well come on in and listen in person.”

From "Found" by Margaret Peterson Haddix