unaccountably
/BrE ʌnəˈkaʊntəbli 
, AmE ˌənəˈkaʊn(t)əbli /
adverb
[vanish, appear, late, absent] inspiegabilmente
quite unaccountably,… inspiegabilmente,…
unaccountably
Italian → English
Oxford Italian–EnglishItalian → EnglishOxford Italian–English