This is the 7749th most frequent Japanese word.
口走り
"口走り" means "a slip of the tongue" or "blurted-out words."
The word '口走って' is used to describe accidentally or unintentionally saying something, often indicating it wasn't meant to be disclosed.
彼は秘密を口走ってしまった。
He blurted out the secret.
The phrase '口走る' is used to describe the action of saying words unexpectedly or offhandedly.
子供が知らない言葉を口走ることがあります。
Children sometimes blurt out words they don't know.
The word '口走り' is used as a noun to refer to the act of blurting things out.