ad-lib

Definitions of ad-lib
1

v perform without preparation

Synonyms:
extemporise, extemporize, improvise, improvize
Type of:
do, execute, perform
carry out or perform an action

n remark made spontaneously without prior preparation

Type of:
comment, input, remark
a statement that expresses a personal opinion or belief or adds information

adj said or done without having been planned or written in advance

“he made a few ad-lib remarks”
Synonyms:
spontaneous, unwritten
unscripted
not furnished with or using a script

adj with little or no preparation or forethought

“his ad-lib comments showed poor judgment”
Synonyms:
extemporaneous, extemporary, extempore, impromptu, off-the-cuff, offhand, offhanded, unrehearsed
unprepared
without preparation; not prepared for

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.