a hyphen that is used only in breaking a word at the end of a line of text.
Words nearby soft hyphen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for soft hyphen
a hyphen, used in word processing to divide a word, which prints only when it appears at the end of a lineAlso called: optional hyphen
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