Bedeutung von “unaccountable” — Learner’s Dictionary

unaccountable

adjective us uk /ˌʌnəˈkaʊntəbl/
SURPRISING

impossible to explain:

For some unaccountable reason, I've got three copies of the same book.
PERSON

not having to give reasons for your actions or decisions

unaccountably adverb

(Definition von “unaccountable” aus dem Cambridge Learner's Dictionary © Cambridge University Press)