I
American usage tends to the termination -ize where English usage often sanctions -ise. Use the termination -ise in
advertise
advise
appraise
apprise (to inform)
arise
chastise
circumcise
comprise
compromise
demise
devise
disfranchise
disguise
emprise
enfranchise
enterprise
exercise
exorcise
franchise
improvise
incise
merchandise
premise
reprise
revise
rise
supervise
surmise
surprise
Use the termination -ize or -yze in
aggrandize
agonize
analyze
anatomize
anglicize
apologize
apostrophize
apprize (to value)
authorize
baptize
brutalize
canonize
catechize
catholicize
cauterize
centralize
characterize
christianize
civilize
colonize
criticize
crystallize
demoralize
dogmatize
economize
emphasize
epitomize
equalize
eulogize
evangelize
extemporize
familiarize
fertilize
fossilize
fraternize
galvanize
generalize
gormandize
harmonize
immortalize
italicize
jeopardize
legalize
liberalize
localize
magnetize
memorialize
mesmerize
metamorphize
methodize
minimize
modernize
monopolize
moralize
nationalize
naturalize
neutralize
organize
ostracize
paralyze
particularize
pasteurize
patronize
philosophize
plagiarize
pulverize
realize
recognize
reorganize
revolutionize
satirize
scandalize
scrutinize
signalize
solemnize
soliloquize
specialize
spiritualize
standardize
stigmatize
subsidize
summarize
syllogize
symbolize
sympathize
tantalize
temporize
tranquilize
tyrannize
universalize
utilize
vaporize
vitalize
vocalize
vulcanize
vulgarize