- -ise1suffix variant spelling of -ize.UsageThere are some verbs which must be spelled -ise and are not variants of the -ize ending. They include advertise, televise, compromise, and improvise. See also -ize.————————-ise2suffix forming nouns of quality, state, or function: expertise.Originfrom OFr. -ise, from L. -itia, -itium.
English new terms dictionary. 2014.