Togs vs Bathers vs Cossie: How Australians Name Swimwear

calendar Jun 15, 2026 / · 7 min read · togs swimwear au nz  ·
Share on: linkedin copy

Cross one state line and the word in your beach bag changes

Drive from Wodonga into Albury — two towns that all but touch across the Murray River — and the thing you packed for the pool quietly changes its name. On the Victorian side it is your bathers. Cross the bridge into New South Wales and the same garment is your swimmers. Head north into Queensland and it becomes your togs; ask for it in inner Sydney and you might call it a cossie. One country, one item of clothing, and at least four everyday words for it — a regional split that survives despite a century of shared radio, television and, lately, online shopping.

This is not loose, interchangeable slang. Each term has a home territory, and Australians tend to hold their local word with a quiet loyalty, as research mapping the country's regional language has repeatedly found. For anyone shopping across borders — or a visitor trying to sound less like a tourist — knowing which word belongs where is genuinely useful. This guide sets out who says what, and why the divide runs along state lines.

The four main words, by region

The broad pattern, documented by Australian Geographic and the Macquarie Dictionary's regional word mapping, lines up strikingly with state boundaries:

WordHeartlandNotes
TogsQueensland (and the NT Top End)The default term across QLD; also used in NZ and Ireland
BathersVictoria, South Australia, Western AustraliaHarks back to swimming as a leisure "bathe"
SwimmersNew South WalesSpreading into SE Queensland and border Victoria
CossieSydneyShort for "costume"; very localised

The neat takeaway: togs is the Queensland word, bathers dominates the south and west, swimmers owns New South Wales, and cossie is a Sydney speciality. The boundaries are not razor-sharp — "swimmers" has been creeping across the Queensland and Victorian borders for years — but the centres of gravity are clear enough that the word a person uses is a fair guess at where they grew up.

Where each word comes from

The etymologies are half the fun, and they explain why the words feel so different.

Togs is the oldest sense at work here. The word originally meant clothes in general — particularly an outer garment — and traces back through old clothing slang ultimately to the Latin toga. Over time, in Australia, New Zealand and Ireland, that general "clothes" meaning narrowed to one specific job: the clothing you wear to swim. That is why "togs" can mean a one-piece, a bikini, board shorts or trunks equally — it describes the purpose, not the cut.

Bathers is the most literal of the four. It comes straight from bathing — swimming's history as a genteel leisure "bathe" at the seaside — and stuck fast in Victoria, South Australia and Western Australia. Swimmers is equally transparent: the clothes you swim in, clipped to a single noun, dominant across New South Wales. Cossie (sometimes spelled cozzie) is simply a shortened, affectionate form of costume — as in "swimming costume" — and is most at home in Sydney.

Why the divide runs along state lines

It would be reasonable to assume a century of national media would have flattened these differences into one word. They have not, and linguists have a clear explanation. Researchers Jill Vaughan, Katie Jepson and Rosey Billington, writing in The Conversation, point to two forces. First, colonial heritage: Australian English grew from the speech of settlers arriving from different parts of the British Isles, so different regions inherited different vocabulary from the start. Second — and more interestingly — identity. When several words exist for the same thing, people choose the one that signals where they belong. Saying "bathers" marks you as Victorian or South Australian; "swimmers" marks you as from New South Wales. The word becomes a small badge of regional belonging, which is exactly why it resists being smoothed away. The Albury–Wodonga border, where the term flips within a few kilometres, is the textbook illustration.

What about New Zealand and Ireland?

Outside Australia, the picture simplifies. In New Zealand, togs is the standard, near-universal word for swimwear — there is no NSW-style rival term, and "swimming togs" is the everyday phrase from school lessons to the beach. Ireland, too, uses togs for swimwear as a matter of course. So the Queensland word turns out to be the one with the widest reach across the English-speaking world, even though within Australia it is regionally boxed in. For how the word is used in shops across the Tasman, see the guide to girls togs in NZ.

And the British exception

Britain is the genuine outlier. There, "tog" almost always means the warmth rating on a duvet, not swimwear — a 4.5 tog for summer, a 13.5 tog for winter. A British shopper typing "togs" into a search engine is far more likely to be pricing up bedding than a bikini, which is the reverse of what an Australian or Kiwi means. That single word doing two completely unrelated jobs across the Commonwealth is a story in itself, told in full in the guide to what togs means. For swimwear specifically, the British equivalents are "swimming costume", "trunks", and occasionally "cossie".

"Swimmers", "togs" and the schoolyard

One reason these words hold on so firmly is that they are learned young, in places where regional identity is strongest — school and the local pool. An Australian child grows up being told to pack their swimmers for the carnival in Sydney, their togs for the lesson in Brisbane, or their bathers for the dam in Adelaide. By the time anyone notices the words differ, the local term is hard-wired. That early imprinting is part of why moving interstate as an adult rarely changes which word a person reaches for first — and why the word can quietly mark a "blow-in" who has moved into the area.

It also explains the occasional confusion in national advertising and online shopping. A retailer running one campaign across the whole country has to pick a word — or hedge with "swimwear", the neutral, slightly formal catch-all that belongs to no single region. That is the safest term for any business writing for a national audience, even if almost nobody uses it at the actual beach.

A note on spelling and plurals

A couple of quirks trip people up in writing. Cossie is also spelled cozzie — both are accepted, and the choice is largely personal. Togs, bathers and swimmers are all plural in form but used for a single garment: you wear "your togs", "your bathers" or "your swimmers", never "a tog" or "a bather". And unlike "a pair of trousers", you would not usually ask for "a pair of togs" — the plural simply is the word for the item. Only "cossie" and "swimming costume" behave as ordinary singulars. None of this causes any real confusion among Australians; it only surprises visitors meeting the words for the first time.

The quick cheat sheet

If you are reading or shopping across regions, this is the short version:

  • Queensland / NT → togs
  • New South Wales → swimmers (cossie in Sydney)
  • Victoria / SA / WA → bathers
  • New Zealand / Ireland → togs
  • United Kingdom → swimming costume / trunks (and "tog" means a duvet rating)

None of these is more correct than another — they are regional preferences, not rules, and locals will understand any of them. But using the local word is a small courtesy that marks you as someone who has done their homework, whether you are buying swimwear in Brisbane, Bondi or Ballarat.

References

Posts in this series