errant
Word family adverberrantlyadjectiveerrantnounerrantry
er·rant /ˈerənt/ adjectiveadj [only before noun] old-fashioned BAD BEHAVIOUR OR ACTIONSbehaving badly, usually by not obeying your parents or not being faithful to your husband or wife 〔孩子〕不听话的;〔丈夫或妻子〕对配偶不忠的 their errant son 他们不听话的儿子
Origin errant (1300-1400) Latin present participle of
errare;
→ ERR