shan't

[shant, shahnt]

contraction of shall not.

Usage note

See contraction.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for shan't

shan't

contraction of

shall not

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

Word Origin and History for shan't

by 1660s, "colloquial" [OED] contraction of shall not.