Pocket Thesaurus
Antonyms of trifling
idling, petty, dinky, slight, shallow, niggling, hollow, piddling, idle, silly, small, minuscule, empty, banal, frivolous, inane, inconsequential, insipid, jejune, measly, negligible, nugatory, paltry, picayune, puny, tiny, trivial, unimportant, vain, valueless, vapid, inconsiderable, loitering, forget it, no big deal, no big thing
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