sine quâ non

See also: sinequanon and sine qua non

English

Noun

sine quâ non (plural sine quibus non)

1. Alternative spelling of sine qua non. [from 18^th c.]
   • 1831, L[etitia] E[lizabeth] L[andon], chapter XIX, in Romance and Reality. […], volume II, London: Henry Colburn and Richard Bentley, […], →OCLC, page 275:

     Knowledge is the sine quâ non; but it is forgotten that moral is, to say the least, as useful as historical or scientific knowledge.