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unaccountable

un·ac·count·a·ble

unaccountable

 
pronunciation:
uhn kaUn t bl
part of speech: adjective
definition 1: not capable of being explained or understood; inexplicable or unfathomable.
an unaccountable failure of memory
antonyms:
accountable
similar words:
inexplicable
definition 2: not subject to being held responsible; not accountable.
He was ruled to be unaccountable for his ex-wife's debts.
antonyms:
accountable, liable, responsible
similar words:
irresponsible
derivations: unaccountably (adv.), unaccountability (n.), unaccountableness (n.)