Definition & Meaning of "ad lib"

ad lib

ADVERB

without prior practice or preparation

to ad lib

VERB

‌to say something in a speech or a performance that you have not prepared or practiced

Ad lib

NOUN

a line that is recited in a speech or performance without prior preparation

What is an "ad lib"?

An ad lib is an unscripted or spontaneous remark or piece of dialogue delivered by an actor or speaker during a performance or speech. It typically occurs when the performer improvises, deviating from the written script to respond to a situation or add personal flair. Ad libs can be used to enhance a performance, address unexpected circumstances, or engage more directly with the audience.