underdaksn.
/ˈʌndədaks/, U.S. /ˈəndərˌdæks/, Australian English /ˈʌndədæks/ Australian colloquial.
Underpants.A proprietary name in Australia.
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the world > textiles and clothing > clothing > types or styles of clothing > underwear > [noun] > underpants
pants1880
chuddies1885
kecks1900
underpants1931
short1941
underfug1946
gotch1968
underdaks1976
shreddies1989
1976 Canberra Times 1 July 8/1 (advt.) Mens holeproof underdaks. Our best seller.
1995 B. Marsh Old Yanconian Daze 95 Because Mrs Bains was unable to do the shopping, Young Bandy had ran out of underdaks.
2008 C. Tsiolkas Slap (2010) 448 He ran to the shower in his underdaks.
This is a new entry (OED Third Edition, June 2015; most recently modified version published online March 2022).
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n.1976