noun
slip of the tongue; verbal mistake
Refers to accidentally saying the wrong word or phrase. Often used in everyday conversation about misspeaking.
さっきの言い間違えは恥ずかしかった。
That slip of the tongue earlier was embarrassing.
言い間違えをして、会議で笑われた。
I made a verbal slip-up and got laughed at in the meeting.
Compound of 言い (continuative form of 言う 'to say') + 間違え (continuative form of 間違える 'to make a mistake').