Ad-lib and Makeshift

Ad-lib adjective - Made or done without previous thought or preparation.

Makeshift and ad-lib are semantically related. in improvisation topic. In some cases you can use "Makeshift" instead the phrase "Ad-lib" as an adjective or an adverb or a noun.

Makeshift adjective - Taking the place of one that came before.

Ad-lib and makeshift are semantically related. Sometimes you can use "Ad-lib" instead the word "Makeshift" as an adjective or an adverb.