Canadian |
British |
American |
Notes |
calibre
|
calibre
|
caliber
|
|
caliper
|
caliper
|
caliper calliper(var)
|
|
cancellation
|
cancellation
|
cancelation cancellation(var)
|
|
cancelled/cancelling
|
cancelled/cancelling
|
canceled/canceling
|
|
candour candor(var)
|
candour
|
candor
|
|
capitalize
|
capitalise capitalize(var)
|
capitalize
|
|
caramelize
|
caramelise caramelize(var)
|
caramelize
|
|
carburetor
|
carburettor
|
carburetor
|
|
catalogue
|
catalogue
|
catalog catalogue(var)
|
|
catalyze
|
catalyse
|
catalyze
|
|
categorization
|
categorisation categorization(var)
|
categorization
|
|
categorize
|
categorise categorize(var)
|
categorize
|
|
cauldron
|
cauldron
|
cauldron caldron(var)
|
|
cauterize
|
cauterise cauterize(var)
|
cauterize
|
|
centimetre
|
centimetre
|
centimeter
|
|
centre center(var)
|
centre
|
center
|
|
cesarean caesarian(var)
|
caesarean
|
cesarean caesarean(var)
|
|
cesium
|
caesium
|
cesium
|
|
characterize
|
characterise characterize(var)
|
characterize
|
|
checkered chequered(var)
|
chequered
|
checkered
|
|
cheque
|
cheque
|
check
|
noun, meaning 'form of payment'; otherwise check
|
chili
|
chilli chili(var)
|
chili chile(var)
|
|
cigarette
|
cigarette
|
cigarette cigaret(var)
|
|
cipher
|
cipher cypher(var)
|
cipher
|
|
civilization
|
civilisation civilization(var)
|
civilization
|
|
civilize
|
civilise civilize(var)
|
civilize
|
|
clamour clamor(var)
|
clamour
|
clamor
|
but 'clamorous' in all countries
|
clangour clangor(var)
|
clangour
|
clangor
|
|
co-author coauthor(var)
|
co-author
|
coauthor
|
|
colonize
|
colonise colonize(var)
|
colonize
|
|
colour color(var)
|
colour
|
color
|
|
commercialize
|
commercialise commercialize(var)
|
commercialize
|
|
computerize
|
computerise computerize(var)
|
computerize
|
|
connection
|
connection connexion(var)
|
connection
|
|
conjuror conjurer
|
conjuror conjurer
|
conjuror conjurer
|
both spellings equally acceptable
|
co-opt coopt(var)
|
co-opt
|
coopt
|
|
councillor councilor(var)
|
councillor
|
councilor
|
|
counselled/counselling
|
counselled/counselling
|
counseled/counseling
|
|
counsellor counselor(var)
|
counsellor
|
counselor
|
|
counter-attack
|
counter-attack
|
counterattack
|
|
cozy cosy(var)
|
cosy
|
cozy
|
|
criticize
|
criticise criticize(var)
|
criticize
|
|
crueller/cruellest
|
crueller/cruellest
|
crueler/cruelest
|
|
crystalline
|
crystalline
|
crystaline
|
|
crystallize
|
crystallise crystallize(var)
|
crystalize crystallize(var)
|
|
curb
|
curb kerb(var)
|
curb
|
kerb only used for noun meaning 'edge of road' in UK; other meanings curb
|
customize
|
customise customize(var)
|
customize
|
|
|