Find Antonyms
serendipitous Antonyms
Opposite of serendipitous
Pinning down the opposite of serendipitous requires matching its exact sense, so the antonyms and opposite words below are paired with a clear adjective definition and ranked by contrast strength.
• adjective (Context 1)
Occurring or discovered by chance in a happy, fortunate, or beneficial way.
Usage Example
"A unfortunate laboratory accident led to the discovery of penicillin."
Strongest
unfortunate
unlucky
Strong
hapless
ill-fated
planned
deliberate
intentional
premeditated
Similar words to serendipitous
Words similar to serendipitous shift depending on context. Common synonyms include:
fortuitous
providential
fortunate
lucky
fluky
happy
felicitous
propitious
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Serendipitous. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/serendipitous