abcense absence

abridgement abridgment

accomodate accommodate

acknowledgment acknowledgement

airplane aeroplane

allright alright 

andy andrew

anemia anaemia

anemic anaemic

anesthesia anaesthesia

appologize appologise

archean archaean

archeology archaeology

archeozoic archaeozoic

armor armour

artic arctic

attachment attachement

attendence attendance

barbecue barbeque

behavior behaviour

biassed biased

biol biology

buletin bulletin

calender calendar

canceled cancelled

car automobile

catalog catalogue

cenozoic caenozoic

center centre

check cheque

color colour

comission commission

comittee committee

commitee committee

conceed concede

creating createing

curiculum curriculum

defense defence

develope develop

discription description

dulness dullness

encyclopedia encyclopaedia

enroll enrol

esthetic aesthetic

etiology aetiology

exhorbitant exorbitant

exhuberant exuberant

existance existence

favorite favourite

fetus foetus

ficticious fictitious

flavor flavour

flourescent fluorescent

foriegn foreign

fourty forty

gage guage

geneology genealogy

grammer grammar

gray grey

guerilla guerrilla

gynecology gynaecology

harbor harbour

heighth height

hemaglobin haemaglobin

hematin haematin

hematite haematite

hematology haematology

honor honour

innoculate inoculate

installment instalment

irrelevent irrelevant

irrevelant irrelevant

jeweler jeweller

judgement judgment

labeled labelled

labor labour

laborer labourer

laborers labourers

laboring labouring

licence license

liesure leisure

liquify liquefy

maintainance maintenance

maintenence maintenance

medieval mediaeval

meter metre

milage mileage

millipede millepede

miscelaneous miscellaneous

morgage mortgage

noticable noticeable

occurence occurrence

offense offence

ommision omission

ommission omission

optimize optimize

organise organize

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

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

temperary temporary

theater theatre

threshhold threshold

transfered transferred

truely truly

truley truly

useable usable

valor valour

vigor vigour

vol volume

whack wack

withold withhold

yeild yield

