mincing vs niminy-piminy

mincing and niminy-piminy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
mincing	No	Yes	No	No
niminy-piminy	No	Yes	No	No

As adjectives, mincing and niminy-piminy are synonyms defined as:

Other synonyms of mincing include prim, twee.

mincing (adjective)	niminy-piminy (adjective)
affectedly dainty or refined	affectedly dainty or refined