- allowing of no explanation; inexplicable
- puzzling; extraordinary: an unaccountable fear of hamburgers
- not accountable or answerable to
WordReference Random House Learner's Dictionary of American English © 2026
un•ac•count•a•ble /ˌʌnəˈkaʊntəbəl/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- impossible to account for or explain;
very surprising:an unaccountable lapse in taste. - not responsible:was held unaccountable for the accident.
un•ac•count•a•ble
(un′ə koun′tə bəl),USA pronunciation adj.
un′ac•count′a•ble•ness, un′ac•count′a•bil′i•ty, n.
un′ac•count′a•bly, adv.
- impossible to account for;
unexplained;
inexplicable:The boat has an unaccountable tendency to yaw. - exempt from being called to account;
not answerable:As asubordinate, he is unaccountable for errors in policy.
- un-1 + accountable 1635–45
un′ac•count′a•bly, adv.
- 1. incomprehensible, inscrutable, mysterious, unintelligible. 2. unanswerable, irresponsible.
Collins Concise English Dictionary © HarperCollins Publishers::
unaccountable /ˌʌnəˈkaʊntəbəl/ adj
'unaccountable' also found in these entries (note: many are not synonyms or translations):