trivial

Synonyms: atomic beside the point commonplace diminutive evanescent everyday flimsy frivolous immaterial inappreciable incidental inconsequential inconsiderable insignificant irrelevant little meager mean meaningless microscopic minor minute momentary negligible nonessential nugatory of no account paltry petty piddling puny scanty skin-deep slight small superficial trifling trite unimportant valueless vanishing worthless

Antonyms: consequential important significant useful valuable weighty worthwhile