Part of speech: Adjective
(informal) small and of little importance
Example: a fiddling sum of money; a footling gesture; our worries are lilliputian compared with those of countries that are at war; a little (or small) matter; a dispute over niggling details; limited to petty enterprises; piffling efforts; giving a police officer a free meal may be against the law, but it seems to be a picayune infraction
Lilliputian, Footling, Diddle, Niggling, Monkey