Chiefly British. variant of -ize: organise.
Definition for -ise (2 of 2)
a noun suffix, occurring in loanwords from French, indicating quality, condition, or function: franchise; merchandise.
Origin of -ise2
Middle English < Old French -ise, variant of -ice
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for -ise
suffix forming verbs
a variant of -ize
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