piddling vs trivial

piddling and trivial both are adjectives.

Word	Noun	Adjective	Verb	Adverb
piddling	No	Yes	No	No
trivial	No	Yes	No	No

As adjectives, piddling and trivial are synonyms defined as:

Other synonyms of piddling include fiddling, footling, lilliputian, little, niggling, petty, picayune, piffling.

piddling (adjective)	trivial (adjective)
(informal) small and of little importance	concerned with trivialities
	of little substance or significance
	(informal) small and of little importance