Definition - Noun 1: failure to conform to or comply with something (as contract requirements) <acceptance of goods occurs when the buyer...will take or retain them in spite of their ~ Uniform Commercial Code> 2: a particular aspect in which something is nonconforming <cannot revoke an acceptance he made with knowledge of a ~ J. J. White and R. S. Summers> Pronunciation"nän-k&n-'fo'r-m&-tE