Something that cannot be imagined or thought possible.
Examples:
The complexity of space travel is inconceivable to most.Her skills in chess are inconceivable to her peers.An inconceivable chain of events led to his unexpected win.
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Antonyms:
Unthinkable
/ʌnˈθɪŋkəbəl/
Something so unlikely or impossible that it cannot be considered.
Examples:
To climb that summit alone was once unthinkable.The idea of peace seemed unthinkable in those times.Building a city underwater remains largely unthinkable.
Synonyms:
Antonyms:
Ways to tell them apart:
Inconceivable often implies something is so unlikely or bizarre that it stretches the limits of belief.
Unthinkable indicates that something is not even considered as a possibility due to it being bizarre, horrible, or forbidden.
In many contexts, inconceivable tends to emphasize the inability to mentally grasp an idea, while unthinkable leans more towards moral or logical restrictions.
If something is inconceivable, it might just be hard to imagine due to logic or complexity, but if it's unthinkable, it might be culturally or ethically unacceptable.
Use inconceivable when highlighting the improbability that something could even happen, and unthinkable to stress its unimaginable nature due to extreme consequences.