ad-lib has definitions from the field of music
1
[ adjective ] with little or no preparation or forethought

Examples

"ad-lib commentst" "an extemporaneous piano recital" "an extemporary lecture" "an extempore skit" "offhand excuses" "trying to sound offhanded" "an off-the-cuff toast" "a few unrehearsed comments"

Related terms

unprepared

2
[ adjective ] said or done without having been planned or written in advance

Examples

"he made a few ad-lib remarks"

Related terms

unscripted

3
[ noun ] remark made spontaneously without prior preparation

Examples

"his ad-libs got him in trouble with the politicians"

Related terms

remark improvise

4
[ adjective ] with little or no preparation or forethought

Examples

"his ad-lib comments showed poor judgment" "an extemporaneous piano recital" "an extemporary lecture" "an extempore skit" "an impromptu speech" "offhand excuses" "trying to sound offhanded and reassurin

Related terms

unprepared

5
[ adjective ] said or done without having been planned or written in advance

Examples

"he made a few ad-lib remarks"

Related terms

unscripted

6
[ verb ] (music) perform without preparation

Examples

"he extemporized a speech at the wedding"

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