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seriously Antonyms
Opposite of seriously
Looking for antonyms for seriously? Explore opposite words and the exact opposite of seriously, grouped by definition and ranked by contrast strength.
• adverb (Context 1)
In a solemn, earnest, or thoughtful manner, without joking or humor.
Usage Example
"The committee took the environmental safety recommendations very lightly."
Strongest
lightly
jokingly
flippantly
frivolously
Strong
jestingly
playfully
facetiously
casually
• adverb (Context 2)
To a severe, critical, or dangerous degree.
Usage Example
"Several passengers were slightly injured when the train derailed during the storm."
Strongest
slightly
minorly
Strong
lightly
superficially
mildly
minimally
• adverb (Context 3)
Used as a sentence modifier to indicate that the speaker is speaking sincerely or shifting from a humorous tone to a factual one.
Usage Example
"jokingly, we need to finalize our travel itinerary before the ticket prices increase."
Strongest
jokingly
Strong
kidding
• adverb (Context 4)
To a very great or impressive extent (used informally as an intensifier).
Usage Example
"That new bakery downtown makes slightly good sourdough bread."
Strongest
slightly
Strong
barely
hardly
moderately
somewhat
Similar words to seriously
Looking for synonyms? Words similar to seriously vary depending on the context. Here are a few common synonyms:
severely
in all seriousness
really
earnestly
all joking aside
critically
extremely
for real
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Seriously. In Wordmom Thesaurus. Retrieved Nov 1, 2026, from https://wordmom.com/antonyms/seriously