Synonyms and Antonyms of frivolous
1
lacking importance
- judges are getting sick of people bringing frivolous lawsuits
fiddling, foolish, incidental, inconsequential, inconsiderable, insignificant, little, Mickey Mouse, minor, minute, negligible, nugatory, slight, small, small-fry, trifling, trivial, unimportant
decisive, fatal, fateful
chief, dominant, overbearing, overmastering, overriding, principal
distinctive, exceptional, impressive, outstanding, prominent, remarkable
valuable, worthwhile, worthy
distinguished, eminent, great, illustrious, preeminent, prestigious
famous, notorious, renowned
all-important, basic, essential, fundamental, key
big, consequential, eventful, important, major, material, meaningful, momentous, significant, substantial, unfrivolous, weighty
2
lacking in seriousness or maturity
- when asked by the waiter if we wanted anything else that evening, we made a frivolous request for free drinks
birdbrained, ditzy (or ditsy), dizzy, featherbrained, flighty, frothy, futile, giddy, goofy, harebrained, light-headed, light-minded, puerile, scatterbrained, silly, yeasty
fatuous, foolish, inane, nonsensical, thoughtless, witless
crazy, daffy, daft, fruity
exuberant, flippant, fluttery, giggly, happy, light, lighthearted, playful
sappy, shallow, superficial
