The IELTS is written in British English. It is created by the University of Cambridge Local Examination Syndicate. Test takers, however, have the option to use either British English or American English in the Writing Module. Be consistent – use the same form of English throughout the test.
American English differs from British English in spelling and word usage. Many words end in –or in American English and –our in British English. Examples are: color / colour. Some words end in –er in American English and –re in British English. Examples are: center / centre. Many words which end in –ize in American English can be spelt with –ize or –ise in British English. Here are some examples.
Difference in spelling
American English / British English
Aluminum / Aluminium
Analyze / analyse
Apologize / Apologise
Catalog / catalogue
Center / Centre
Check / Cheque
Color / colour
Dialog / Dialogue
Honor / Honour
Flavor / Flavour
Labor / Labour
Defense / Defence
Practice, Practise / Practise (verb)
Theater / Theatre
Program / Programme
Organize / Organise
Many words that end in double consonants in American English end in a single consonant in British English.
American English / British English
Appall / Appal
Enroll / enrol
Fulfill / fulfil
Skillful / skilful
There are also some words that have double l in British English and single I in American English.
American English / British English
Jewelry / Jewellery
Counselor / Counsellor
Modeling / Modelling
Traveler / Traveller
Difference in word usage
American English / British English
Airplane / aeroplane
Apartment / flat
Attorney, lawyer / Barrister, solicitor
Can / tin
Candy / sweets
Cookie, cracker / biscuit
Crazy / mad
Diaper / nappy
Elevator / lift
Flashlight / torch
Garbage, trash / rubbish
Gas, gasoline / petrol
Restroom / toilet
Sidewalk / pavement
Vacation / holiday
Store / shop
Faculty / staff
