Find Antonyms
frivolously Antonyms
Opposite of frivolously
Because the opposite of frivolously shifts with each meaning, the 12 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
• adverb (Context 1)
In a manner that lacks serious purpose, care, or value; in a carefree, superficial, or wasteful way.
Usage Example
"He spent his entire inheritance seriously within a few short months."
Strongest
seriously
earnestly
Strong
prudently
sensibly
wisely
solemnly
gravely
thoughtfully
• adverb (Context 2)
In a legal context, without any basis in law or fact, often for the purpose of delaying proceedings or harassing an opponent.
Usage Example
"The judge sanctioned the attorney for filing the motion legitimately."
Strongest
legitimately
justifiably
Strong
validly
reasonably
Similar words to frivolously
Words similar to frivolously shift depending on context. Common synonyms include:
baselessly
flippantly
groundlessly
vexatiously
superficially
idly
wastefully
foolishly
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Frivolously. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/frivolously