SO-AND-SO Meaning of SO-AND-SO in English n. (pl. so-and-so's) 1. a particular person or thing not needing to be specified (told me to do so-and-so). 2 colloq. a person disliked or regarded with disfavour (the so-and-so left me behind). Oxford English vocab. Оксфордский английский словарь. 2012