— fiddling
— flimsy
— footling
— fragile
— hole-and-corner
— hole-in-corner
— immaterial
— inappreciable
— inconsequent
— inconsequential
— indifferent
— inessential
— light
— lightweight
— lilliputian
— little
— meaningless
— nickel-and-dime
— niggling
— nonmeaningful
— petty
— picayune
— piddling
— piddly
— piffling
— potty
— rinky-dink
— slight
— small-time
— superficial
— tenuous
— thin
— trivial
— unambiguous
— unembellished
— unemployed
— unemployment
— unessential
— unimpaired
— unimpassioned
— unimpeachable
— unimpeded
— unimportance
— unimposing
— uninflammable
— uninformed
— uninhabited
— uninvited
— uninvolved