Where "Doona" Comes From
"Doona" began as a brand name. The Melbourne bedding company Kimptons introduced it in the 1970s, adapting it from the Danish word "dyne" — meaning a down-filled quilt. The product was a continental-style duvet, unfamiliar to most Australians at the time. The brand name stuck so thoroughly that it became the generic term for any quilted duvet, regardless of manufacturer — one of the cleaner examples of brand-to-generic drift in Australian English.
In 1991, the Tontine Group acquired the Doona trademark and, in a reversal of the usual commercial logic, chose to allow the word to remain in general use rather than enforce it as a proprietary name. As a result, "doona" now appears in the Macquarie Dictionary as a standard Australian English word for a duvet or continental quilt. British English uses "duvet" (from French); Australians use "doona" — and the path from registered brand to household word took less than two decades.
Source:
"It's freezing, grab the extra doona."
How Aussies Actually Use It
It's used across Australia the way "duvet" or "comforter" might be used elsewhere.
"Doona day" has also become slang for a sick day spent in bed.
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