errant

不定的；周游的；错误的；偏离正路的英释中释adjErrant is used to describe someone whose actions are considered unacceptable or wrong by other people. For example, an errant husband is unfaithful to his wife.

1 knight errant,n. 唐·吉诃德式的人物；游侠骑士

1 Usually his cases involved errant husbands and wandering wives..通常他接手的案子都涉及出轨的丈夫和离家出走的妻子。