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
Words That Can Ruin Your SentenceActually . . . crutch words slip into sentences in order to give the speaker more time to think or to emphasize a statement. Over time, they become unconscious verbal tics. Here are some crutch words to avoid!
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012