unbeknown
Word family adjectiveunbeknownunbeknownst
un·be·known /ˌʌnbɪˈnəʊn $ -ˈnoʊn/ (also unbeknownst /-ˈnəʊnst $ -ˈnoʊnst/ written) adverbadv [sentence adverbadv] unbeknown to somebody NOT KNOWwithout that person knowing about it 不为某人所知的 Unbeknown to him, his wife had been trying to phone him all morning. 他哪里知道,妻子一上午都在给他打电话。