¶ The Library

Spelling

Spellcheck underlines organise in red, then color in blue — one map for every UK/US spelling split

Curated by Roger Fielding 32 articles

Adults UK & US

In this pillar

Every article, one shelf

Start here One Language, Two Paint Jobs 4 min read The genuine forks between UK and US spelling, the common ground beneath them — and where to start

Advice/Advise & Practice/Practise (Regional Split) 12 min read That email to your tutor stalls on advice or advise, practice or practise — here's the fix
Affect or Effect? 12 min read The war affected daily life, or did it effect a change — the verb-noun split, finally clear
Catalogue or Catalog? UK vs US 4 min read Your catalogue crosses the Atlantic and becomes a catalog — the whole -ogue/-og family, laid out plainly
Centre or Center? UK vs US 3 min read Your cursor stops dead on centre, or is it center — one ending, one big decision
Clothing Vocabulary (Trousers or Pants?) 3 min read You know the words, you've worn the clothes — until trousers meets pants and the meaning flips
Colour or Color? UK vs US 4 min read One email to London, another to Chicago, and suddenly colour and color both look wrong
Commonly Confused Words — Start Here 2 min read Affect or effect, fewer or less, their or there — one map for every mix-up you keep making
Complement/Compliment, Principal/Principle, Stationary/Stationery 12 min read Compliment your principal on the stationary he ordered — three classic swaps, sorted before they embarrass you
Everyday Vocabulary (Holiday or Vacation?) 3 min read A job ad says vacation, your calendar says holiday — the everyday words that quietly change meaning
Fewer or Less? 11 min read Ten items or less nags at every grammar pedant — when fewer wins and when less actually does
Food & Shopping Vocabulary (Crisps or Chips?) 3 min read Ask for crisps in an American shop and watch the blank stare — the chips/fries tangle, untangled
Home & Household Vocabulary (Flat or Apartment?) 4 min read An American film says "leave your coat in the closet" — flat or apartment, wardrobe or closet, sorted
How Words Are Built: Prefixes, Suffixes & Roots 12 min read Long words like uncomfortable stop feeling scary once you spot the prefix, root and suffix inside
Learnt or Learned? Got or Gotten? Irregular Past Forms 12 min read Dreamt or dreamed, got or gotten — the irregular past forms that split British and American English
Organise or Organize? UK vs US 3 min read Spellcheck flags organise, suggests organize, and suddenly you doubt every word you write — here's the actual split
Paediatric or Pediatric? -ae- and -oe- Words 9 min read Oesophagus or esophagus, paediatric or pediatric — the ae/oe split that flags as wrong on both sides
Spelling Strategies That Work in Both UK & US 12 min read A word stalls mid-sentence and spellcheck just underlines it — strategies that work on both sides
Spelling Systems — UK vs US at a Glance 2 min read Colour or color, organise or organize — the six real splits between UK and US spelling
The -er Family: Center, Theater, Meter (US) US11 min read You type center, doubt yourself, try centre — then your friend's fantasy novel uses both
The -ise Family: Organise, Realise (UK, + the Oxford -ize nuance) UK13 min read Organise looks right until a friend fresh from the US swears it should be organize
The -ize Family: Organize, Realize (US) US11 min read Spellcheck flags organise with a red squiggle in your history essay — the US -ize fix
The -og Family: Catalog, Dialog (US) US10 min read Catalog, dialog, analog — the American trims those endings, and here's exactly where it stops
The -ogue Family: Catalogue, Dialogue (UK) UK11 min read Dialouge gets the red squiggle every time — the -ogue endings British spelling insists on keeping
The -or Family: Color, Favor, Honor (US) US9 min read Your character does her best friend a favor — or is it favour? — the US -or family
The -our Family: Colour, Favour, Honour (UK) UK8 min read Write color in a UK essay and it comes back circled red — the -our family, sorted
The -re Family: Centre, Theatre, Metre (UK) UK12 min read That half-second snag when 'center' slips into a UK email — meet centre, theatre and metre
Their, There or They're? 12 min read Their, there and they're sound identical out loud and identical is exactly the problem on paper
Transport Vocabulary (Lift or Elevator?) 4 min read The sign says elevator, you wanted a lift — the transport words that swap sides of the Atlantic
Travelling or Traveling? Double-L & Consonant Doubling 8 min read One L or two before -ing — the rule that decides travelling versus traveling, sorted for good
UK vs US Vocabulary — Start Here 2 min read One language, two spellings: colour vs color, lift vs elevator, and the split that trips everyone up