niminy-piminy vs twee

niminy-piminy and twee both are adjectives.

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

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

Other synonyms of niminy-piminy include mincing, prim.

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