British English and American English Spelling
Here are the principal differences in spelling between British English and American English.
| British English | American English |
| Final -l is always doubled after one vowel in stressed and unstressed syllables in English but usually only in stressed syllables in American English, for example: | rebel > rebelled
travel > travelled | rebel > rebelled
travel > traveled |
| Some words end in -tre in English and -ter in American English, for example: | centre
theatre | center
theater |
| Some words end in -ogue in English and -og in American English, for example: | analogue
catalogue | analog
catalog |
| Some words end in -our in English and -or in American English, for example: | colour
labour | color
labor |
| Some verbs end in -ize or -ise in English but only in -ize in American English, for example: | realise, realize
harmonise, harmonize | realize
harmonize |
Common Differences
| English | American English |
| all right | all right, alright (disputed) |
| analyse | analyze |
| centre | center |
| cheque | check |
| colour | color |
| counsellor | counselor |
| criticise, criticize | criticize |
| defence | defense |
| doughnut | donut |
| favour | favor |
| fibre | fiber |
| flavour | flavor |
| fulfil | fulfill |
| grey | gray |
| honour | honor |
| humour | humor |
| jewellery | jewellery, jewelry |
| judgement, judgment | judgment |
| kerb | curb |
| labour | labor |
license, licence (verb)
licence (noun) | license (verb)
license (noun) |
| litre | liter |
| metre | meter |
| mould | mold |
| neighbour | neighbor |
| offence | offense |
practise (verb)
practice (noun) | practice (verb)
practice (noun) |
| pretence | pretense |
| programme | program |
| pyjamas | pajamas |
| realise, realize | realize |
| savour | savor |
| speciality | specialty |
| theatre | theater |
travelled
travelling | travelled, traveled
travelling, traveling |
| tyre | tire |
| valour | valor | | | | | | | | | | | | Courtesy of : http://www.englishclub.com/writing/spelling_american-english.htm |