did·dly /ˈdɪdli/ (also diddlysquat /ˌdɪdliˈskwɒt $ ˈdɪdliskwɑːt/) American EnglishAmE informal noun not know/mean diddly informal NOT KNOWto know or mean nothing at all 一无所知/毫无意义 Brad? He doesn’t know diddly about baseball. 布拉德?他对棒球一无所知。
Origin diddly (1900-2000) Probably from doodlysquat “nothing” ((1900-2000))