a clause added on to another clause to invite the hearer's agreement or conversational cooperation. Tags are usually in the form of a question with a pronoun as subject, the antecedent of which is the subject of the main clause; as isn't it in the bread is on the table, isn't it?
tag question in American English
a brief question with the general meaning “Is it not so?”, added to a declarative or imperative sentence: it is negative in construction when the original sentence is affirmative, and vice versa (Ex.: It isn't raining, is it? Hurry now, won't you?)