inexplicable

Something inexplicable can't be explained. It doesn't make sense. You don't want to come to the beach on the most beautiful day of the year? That's inexplicable!

Inexplicable is made up of the prefix in, which means "not," and explicable, which comes from the Latin explicabilis, meaning "unfolded, unraveled." Do you see the double negative? If something is not unfolded, it's folded up and tangled — like something that doesn't make sense. Your school's decision to call a snow day is inexplicable, if there's barely a layer of snow on the ground.

Definitions of inexplicable
1

adj incapable of being explained or accounted for

inexplicable errors”
“left the house at three in the morning for inexplicable reasons”
Synonyms:
incomprehensible
incomprehensible, uncomprehensible
difficult to understand
cryptic, cryptical, deep, inscrutable, mysterious, mystifying
of an obscure nature
paradoxical, self-contradictory
seemingly contradictory but nonetheless possibly true
unaccountable, unexplainable
not to be accounted for or explained
unexplained
having the reason or cause not made clear
insoluble
admitting of no solution or explanation
Antonyms:
explicable
capable of being explicated or accounted for
comprehendible, comprehensible
capable of being comprehended or understood
explainable, interpretable
capable of being understood
soluble
susceptible of solution or of being solved or explained
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