Here is a handy dandy guide to spelling differences in America, Britain and Canada. It is not complete. You get the general idea. ;)
Canadian English generally follows British spelling, but often the American alternative is possible too. The most commonly used spelling, where applicable, is marked with an asterisk (*).
Australian English also generally follows the British tradition.
Here is a link to quotation mark use in case you are curious. Also not created equal. British/Canadian use out of quote periods etc. American is inside even if logic says it should not be so. HERE.
British
|
Canadian |
American |
|
acknowledgement
|
acknowledgement*, acknowledgment
|
acknowledgment
|
|
ageing,
aging
|
aging*,
ageing*
|
aging
|
|
aeroplane
|
airplane
|
airplane
|
|
aesthetics
|
aesthetics
|
aesthetics, esthetics
|
|
aluminium
|
aluminum
|
aluminum
|
| among, amongst | among*, amongst | among |
| amortise | amortize | amortize |
| anaemia | anemia | anemia |
|
anaesthesia
|
anaesthesia*, anesthesia
|
anesthesia
|
| analogue | analogue | analogue, analog |
| analyse | analyze*, analyse | analyze |
| annex, annexe | annex | annex |
| apnoea | apnea | apnea |
|
apologise*, apologize
|
apologize
|
apologize
|
|
archaeology
|
archaeology*, archeology
|
archaeology, archeology
|
| armour | armour*, armor | armor |
| artefact | artifact | artifact |
| authorise*, authorize | authorize | authorize |
axe
|
axe
|
ax,
axe
|
| balk*, baulk | balk | balk |
| banister*, bannister | banister*, bannister | banister |
| behaviour | behaviour | behavior |
| behove | behoove | behoove |
| blonde (for female) | blonde*, blond* | blond, blonde |
| B.Sc. | B.Sc. | B.S. |
| burette | burette*, buret | buret, burette |
|
burnt,
burned
|
burned*,
burnt*
|
burned,
burnt
|
| bussed, bussing | bused, busing | bused, busing |
| Caesarean | Caesarian*, Cesarean, Cesarian | Cesarean, Caesarean |
| calibre | calibre | caliber |
|
cancelled
|
cancelled
|
canceled,
cancelled
|
| candour | candour | candor |
| capitalise | capitalize | capitalize |
| carburettor | carburetor*, carburettor | carburetor |
|
catalogue
|
catalogue
|
catalog(ue)
|
| catalyse | catalyze*, catalyse | catalyze |
|
centre
|
centre
|
center
|
|
cheque (noun,
money)
|
cheque
|
check
|
|
chequered
|
checkered
|
checkered
|
| chilli*, chili | chili | chili |
| cigarette | cigarette | cigarette, cigaret |
| clamour | clamour | clamor |
| collectable *, collectible | collectible | collectible |
|
colour
|
colour*,
color
|
color
|
| connection*, connexion | connection | connection |
| convenor | convenor | convener |
|
cosy
|
cozy
|
cozy
|
|
counsellor
|
counsellor*, counselor
|
counselor
|
|
criticise*, criticize
|
criticize
|
criticize
|
| curb (verb) | curb | curb |
| customize, customise | customize | customize |
| demeanour | demeanour | demeanor |
| dependant (a person who relies on another person, especially for financial support) | dependant | dependent |
|
defence
|
defence*,
defense
|
defense
|
| dialling, dialled | dialing, dialed; dialling, dialled | dialing, dialed |
|
dialogue
|
dialogue
|
dialog(ue)
|
|
diarrhoea
|
diarrhea
|
diarrhea
|
| dietician*, dietitian | dietitian*, dietician | dietitian*, dietician, |
| dispatch*, despatch | dispatch | dispatch |
|
doughnut
|
doughnut,
donut
|
donut,
doughnut
|
|
Dr
(A contracted form of a word,
ending with the same letter as the full form, is not followed by a full
stop).
|
Dr.
|
Dr.
|
|
draught
(current of air)
|
draft
|
draft
|
dreamt,
dreamed
|
dreamt*,
dreamed*
|
dreamed,
dreamt
|
|
emphasise
|
emphasize
|
emphasize
|
| encyclopedia*, encyclopædia | encyclopedia | encyclopedia |
| endeavour | endeavour | endeavor |
|
enquiry*,
inquiry
|
inquiry*,
enquiry
|
inquiry
|
|
enrol
|
enrol
|
enroll
|
|
favour
|
favour
|
favor
|
| favourite | favourite | favorite |
|
fibre
|
fibre
|
fiber
|
| fibre optics | fiber optics, fibre optics (used by the Canadian government only) | fiber optics |
| finalize, finalise | finalize | finalize |
|
flautist
|
flutist*,
flautist
|
flutist
|
|
flavour
|
flavour
|
flavor
|
| focused, focusing or focussed, focussing | focused, focusing or focussed, focussing | focused, focusing |
| foetus*, fetus | fetus | fetus |
| forever*, for ever | forever | forever |
| fuelling | fuelling | fueling |
|
fulfil
|
fulfil
|
fulfill,
fulfil
|
| galvanise | galvanize | galvanize |
| gaol (old fashioned), jail* | jail | jail |
| gauge | gauge | gauge, gage |
| gemmology | gemmology | gemology |
| generalise | generalize | generalize |
|
glamour
|
glamour
|
glamour,
glamor
|
| gonorrhoea | gonorrhea | gonorrhea |
|
grey
|
grey
|
gray
|
| gynaecology | gynecology*, gynaecology | gynecology |
|
haemorrhage
|
hemorrhage
|
hemorrhage
|
|
harbour
|
harbour
|
harbor
|
| harmonise*, harmonize | harmonize | harmonize |
haulier
|
hauler
|
hauler
|
| homeopathy*, homoeopathy | homeopathy | homeopathy |
|
honour
|
honour
|
honor
|
| humour | humour | humor |
| initialise | initialize | initialize |
| instalment | instalment*, installment | installment |
| jail*, gaol (old fashioned) | jail | jail |
|
jewellery
|
jewellery*, jewelry
|
jewelry
|
|
judgment*,
judgement
|
judgment*,
judgement
|
judgment
|
|
kerb
(noun)
|
curb
|
curb
|
| kilometre | kilometre | kilometer |
| label, labelled, labelling | label, labelled, labelling | label, labeled, labeling |
|
labour
|
labour
|
labor
|
| lasagne | lasagna | lasagna |
|
leant,
leaned
|
leaned
|
leaned
|
|
learnt,
learned
|
learned*,
learnt*
|
learned
|
| licence (noun) | licence | license |
| license (verb) | license*, licence | license |
|
litre
|
litre
|
liter
|
| lustre | lustre | luster |
|
manoeuvre
|
manoeuvre*, maneuver
|
maneuver
|
| marvellous | marvellous | marvelous |
| maximise*, maximize | maximize | maximize |
| meagre | meagre | meager |
|
metre
(unit of
length)
|
metre
|
meter
|
| modelled | modelled | modeled |
| modelling | modelling | modeling |
|
mould
|
mould
|
mold
|
| moustache | moustache*, mustache | mustache, moustache |
| mum, mummy | mum, mummy*, mom, mommy | mom, mommy |
|
neighbour
|
neighbour
|
neighbor
|
| net, nett (amount of money) | net | net |
| ochre | ochre | ocher |
| odour | odour*, odor | odor |
| oedema, edema | edema | edema |
| oesophagus*, esophagus | esophagus | esophagus |
| oestrogen*, estrogen | estrogen | estrogen |
|
offence
|
offence*,
offense
|
offense
|
|
omelette
|
omelette*,
omelet
|
omelet,
omelette
|
|
organisation*, organization
|
organization
|
organization
|
| organise | organize | organize |
| optimise*, optimize | optimize | optimize |
| orientate | orient | orient |
| orientated | oriented | oriented |
| orthopaedic | orthopaedic*, orthopedic | orthopedic |
| pædiatrics | pediatrics | pediatrics |
| paedophile*, pedophile | pedophile | pedophile |
| paralyse | paralyze*, paralyse | paralyze |
|
parlour
|
parlour
|
parlor
|
|
parallelling, parallelled
|
paralleling, paralleled
|
paralleling, paralleled
|
|
peddler*,
pedlar
|
peddler*,
pedlar
|
peddler
|
| penalise, penalisation | penalize, penalization | penalize, penalization |
|
pleaded
|
pleaded
|
pleaded,
pled
|
|
plough
|
plow*,
plough
|
plow
|
|
practise
(verb)
|
practise*,
practice
|
practice
|
practice
(noun)
|
practice
|
practice
|
|
pretence
|
pretense*,
pretence
|
pretense
|
|
programme
(TV), program (computer)
|
program*,
programme
|
program
|
|
pyjamas
|
pyjamas
|
pajamas
|
| rancour | rancour | rancor |
|
realise*,
realize
|
realize
|
realize
|
| recognise*, recognize | recognize | recognize |
| rigour | rigour | rigor |
| rumour | rumour | rumor |
| sabre | sabre | saber |
| saleable | saleable | saleable, salable |
| saviour | saviour | savior |
|
savour
|
savour
|
savor
|
|
sceptical
|
sceptical*, skeptical
|
skeptical
|
| signalling | signalling | signaling |
|
skilful
|
skilful*,
skillful
|
skillful,
skilful
|
| slipped disc | slipped disc | slipped disk |
|
smelt,
smelled
|
smelled
|
smelled
|
| snorkelling | snorkelling | snorkeling |
|
speciality
|
specialty*, speciality
|
specialty
|
| standardise, standardisation | standardize, standardization | standardize, standardization |
|
sulphur
|
sulphur*,
sulfur
|
sulfur
|
theatre
|
theatre
|
theater
|
|
theatregoer
|
theatregoer
|
theatergoer
|
|
titbit
|
tidbit
|
tidbit
|
| towards | toward*, towards | toward, towards (unusual) |
|
travelling
|
travelling
|
traveling,
travelling
|
| tumour | tumour | tumor |
|
tyre
|
tire
|
tire
|
| valour | valour | valor |
| vapour | vapour | vapor |
|
vice
(the
device)
|
vice
|
vise,
vice
|
| vigour | vigour | vigor |
| visualise*, visualize | visualize | visualize |
| wagon*, waggon | wagon | wagon |
| woollen | woollen*, woolen | woolen |
| yogurt*, yoghurt, yoghourt | yogourt*, yoghurt, yogurt | yogurt*, yoghurt, yoghourt |
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