Words that change meaning between UK and US English

Everyone knows colour and color. The dangerous words are the ones that exist in both varieties, look completely ordinary, and mean something different. Those do not get flagged by a spellchecker, and they are the ones that make an editor decide you have not read their publication.

The genuinely confusing ones

"Quite" is the one that catches professional writers. Tell a British editor your piece is "quite good" and you have damned it with faint praise. Tell an American editor the same and you have called it excellent. The word is doing opposite work in the same sentence.

"Tabling" is the one that causes real confusion in reported pieces about politics or business. In a UK report, tabling a motion means putting it on the agenda. In a US report, it means killing it. Same three words, opposite outcome.

The ones that are merely different

These will not cause a misunderstanding, but using the wrong one signals you did not check who you were writing for:

flat / apartment · lift / elevator · queue / line · petrol / gas · biscuit / cookie · fortnight / two weeks · holiday / vacation · rubbish / trash · football / soccer · nappy / diaper · boot / trunk · bonnet / hood · pavement / sidewalk · chemist / drugstore · post / mail · CV / résumé · mobile / cell phone · autumn / fall · maths / math

That last one is a giveaway. British writers pluralise it; American writers do not.

Why this matters commercially

If you are pitching across markets — and BRYME lists paid opportunities in the US, UK, Canada and Australia — vocabulary is the fastest tell an editor has.

An editor reading a pitch is making one decision very quickly: does this person know my publication? A British editor who reads "I'd love to write about the fall semester at a public school" is reading two errors in one clause. Not fatal, but it moves you from "knows us" to "mass-pitching".

The reverse is just as true. An American editor reading "I'll get it to you in a fortnight" has to translate.

Words that are safe either way

Worth knowing so you do not overcorrect:

• -ise / -ize: British English accepts both. Oxford spelling actively prefers -ize. This is not an error either way, but pick one and hold it.
• Learned / learnt, spelled / spelt, dreamed / dreamt: both valid in British English; American English strongly prefers the -ed forms.
• Whilst / while: both correct in British English, but whilst reads as dated or affected to many editors on both sides. While is never wrong.
• Amongst / among: same story. Among is always safe.

How to catch these before an editor does

Read one recent piece from the publication properly. Not the homepage — one full article. You will absorb the register faster than any list can teach you.

Keep a personal list of the ones you get wrong. Everyone has three or four. Mine are recurring; yours will be too. See how to build a personal style guide.

Set your spellchecker to the target variety — then do not trust it. It will catch colour and miss quite, table, momentarily and every other word in the first table. Those are semantic, not orthographic.

Search your draft for your known offenders. A thirty-second find-and-check beats a rejection.

The one rule underneath all of this

Consistency matters more than which variety you choose. A piece written in flawless American English for a British magazine is a smaller problem than a piece that switches between the two in adjacent paragraphs. The first reads as a foreign correspondent; the second reads as careless.

For the spelling and punctuation side of the same question, see British vs American English.