出典:Wiktionary
From Middle English beknowen, biknowen, from 古期英語 becnāwan (“to know, know about”), equivalent to be- + know. Cognate with Old High German bichnāan (“to recognise, see”).
beknow (三人称単数 現在形 beknows, 現在分詞 beknowing, 過去形 beknew, 過去分詞 beknown)