Simple Definition of tag question
grammar : a brief question (such as “don't you?” in “You know him, don't you?”) that comes at the end of a statement usually to ask if the statement is correct
Full Definition of tag question
: a question (as isn't it in “it's fine, isn't it?”) added to a statement or command (as to gain the assent of or challenge the person addressed); also : a sentence ending in a tag question
First Known Use of tag question
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