Synonymsad-lib, clap (together or up), extemporize, fake
Related Wordsconcoct, contrive, cook (up), devise, fabricate, hatch, invent, make up, manufacture, think (up); cobble (together or up), dash (off)
Near Antonymsarrange, lay, prepare, ready; consider, contemplate, ponder, study; exercise, practice (also practise), rehearse
Synonymsad hoc, ad-lib, down and dirty, extemporary, extempore, impromptu, improvisational, improvised, offhand, offhanded, off-the-cuff, snap, spur-of-the-moment, unconsidered, unplanned, unpremeditated, unprepared, unrehearsed, unstudied
Antonymsconsidered, planned, premeditated, premeditative, prepared, rehearsed
Related Wordsunscripted; automatic, impulsive, instinctive, involuntary, spontaneous; casual, cursive, informal, unauthorized; half-baked, half-cocked, ill-advised
Near Antonymsdeliberate, intended, intentional
Definition of ad lib
Recent Examples of ad lib from the Web
Trump's ad lib diplomacy may be partly in response to that dearth of good information.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ad lib.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
AD-LIB Defined for English Language Learners
AD-LIB Defined for Kids
medical Definition of ad-lib
- ad-lib feeding of animals
Seen and Heard
What made you want to look up ad-lib? Please tell us where you read or heard it (including the quote, if possible).