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adlib - 1 dictionary result

ad-lib

[ad-lib, ad-] verb, -libbed, -lib⋅bing, adjective
–verb (used with object)
1. to improvise all or part of (a speech, a piece of music, etc.): to ad-lib one's lines.
–verb (used without object)
2. to act, speak, etc., without preparation: Throughout the play he had to ad-lib constantly.
–adjective
3. impromptu; extemporaneous: ad-lib remarks to hecklers.

Origin:
1915–20, Americanism; v. use of ad lib


ad-libber, noun
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