abcense absence
abridgement abridgment
accomodate accommodate
acknowledgment acknowledgement
airplane aeroplane
allright alright 
andy andrew
anemia anaemia
anemic anaemic
anesthesia anaesthesia
anesthesiologist anaesthesiologist
anesthesiololy anaesthesiology
anesthetic anaesthetic
anesthetist anaesthetist
appologize appologise
appologized appologised
appologizing appologising
apr april
archean archaean
archeology archaeology
archeozoic archaeozoic
armor armour
armored armoured
armory armoury
armorment armourment
artic arctic
attachment attachement
attachments attachements
attendence attendance
aug august
barbecue barbeque
bbq barbeque
behavior behaviour
behaviorism behaviourism
biassed biased
biol biology
buletin bulletin
calender calendar
canceled cancelled
car automobile
catalog catalogue
cenozoic caenozoic
center centre
check cheque
color colour
colored coloured
coloring colouring
colorless colourless
comission commission
comittee committee
commitee committee
conceed concede
creating createing
curiculum curriculum
dec december
defense defence
dept department
develope develop
discription description
dulness dullness
encyclopedia encyclopaedia
enroll enrol
esthetic aesthetic
etiology aetiology
exhorbitant exorbitant
exhuberant exuberant
existance existence
favorite favourite
feb february
fetus foetus
ficticious fictitious
flavor flavour
flourescent fluorescent
foriegn foreign
fourty forty
gage guage
geneology genealogy
grammer grammar
gray grey
guerilla guerrilla
gynecological gynaecological
gynecologist gynaecologist
gynecology gynaecology
harbor harbour
heighth height
hemaglobin haemaglobin
hematin haematin
hematite haematite
hematologist haematologist
hematology haematology
hemophilia haemophilia
hemorrhage haemorrhage
hemorrhoids haemorrhoids
honor honour
innoculate inoculate
installment instalment
irrelevent irrelevant
irrevelant irrelevant
jan january
jeweler jeweller
judgement judgment
jul july
jun june
labeled labelled
labor labour
laborer labourer
laborers labourers
laboring labouring
lib library
licence license
liesure leisure
liquify liquefy
maintainance maintenance
maintenence maintenance
marshal marshall
medieval mediaeval
medievalism mediaevalism
medievalist mediaevalist
meg margaret
meter metre
milage mileage
millipede millepede
miscelaneous miscellaneous
morgage mortgage
noticable noticeable
nov november
occurence occurrence
oct october
offense offence
ommision omission
ommission omission
optimize optimize
optimizer optimiser
optimizing optimising
optimized optimised
organisation organization
organise organize
organised organized
organising organizing
organiser organizer
pajamas pyjamas
paleography palaeography
paleolithic palaeolithic
paleontological palaeontological
paleontologist palaeontologist
paleontology palaeontology
paleozoic palaeozoic
pamplet pamphlet
paralell parallel
parl parliament
parlt parliament
pediatric paediatric
pediatrician paediatrician
pediatrics paediatrics
pedodontia paedodontia
pedodontics paedodontics
personel personnel
practise practice
program programme
psych psychology
qld queensland
questionaire questionnaire
rarify rarefy
reccomend recommend
recieve receive
resistence resistance
restaraunt restaurant
savior saviour
sep september
seperate separate
sept september
sieze seize
summarize summarise
summerize summarise
superceed supercede
superintendant superintendent
supersede supercede
suprise surprise
surprize surprise
synchronise synchronize
tas tasmania
temperary temporary
theater theatre
threshhold threshold
transfered transferred
truely truly
truley truly
useable usable
valor valour
vic victoria
vigor vigour
vol volume
whack wack
withold withhold
yeild yield