Find Synonyms
unthinkably Synonyms
Another word for unthinkably
Choosing another word for unthinkably that fits your sentence is easier when synonyms and similar words are paired with an exact adverb definition and ranked by match strength.
• adverb (Context 1)
To a degree or in a manner that is impossible to imagine, comprehend, or consider likely.
Usage Example
"The deep ocean floor remains an inconceivably vast and largely unexplored frontier."
Strongest
inconceivably
unimaginably
Strong
unbelievably
incredibly
impossibly
unfathomably
Opposites of unthinkably
The opposite of unthinkably shifts depending on context. Common opposites include:
conceivably
imaginably
plausibly
predictably
• Nearby Words
Cite this Entry
Wordmom. (2026). Synonyms for Unthinkably. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/unthinkably