sentence substitute

sentence substitute

n
(Linguistics) a word or phrase, esp one traditionally classified as an adverb, that is used in place of a finite sentence, such as yes, no, certainly, and never
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014