Thesaurus.com
Dictionary.com
Showing results for unthinkable. Search instead for undrinkabl.
Definitions

unthinkable

[uhn-thing-kuh-buhl] / ʌnˈθɪŋ kə bəl /
ADJECTIVE
incredible, unusual
Synonyms
STRONGEST
absurd extraordinary illogical implausible impossible improbable inconceivable preposterous rare unbelievable uncommon unimaginable unlikely unreasonable
WEAK
beyond belief beyond possibility exceptional incogitable insupportable out of the question outlandish singular unique unordinary
Antonyms
STRONGEST
believable cheap common familiar imaginable likely logical normal ordinary plausible possible probably rational reasonable regular sensible tenable usual
WEAK
conceivable credible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Supporters love the "madman theory" for its ability to keep opponents off guard and pull off previously unthinkable achievements.

From BBC • Apr. 8, 2026

Or it may need to consider the unthinkable.

From The Wall Street Journal • Apr. 4, 2026

Just a year ago, the idea of commodity-sensitive energy companies reaching these valuations would have been unthinkable.

From MarketWatch • Mar. 25, 2026

It is to ensure that the cost of starting one remains permanently unthinkable.

From The Wall Street Journal • Mar. 24, 2026

Leaving Afghanistan had been unthinkable to her while Ahmad and Noor were still alive.

From "A Thousand Splendid Suns" by Khaled Hosseini