Meaning of grundies in English:

grundies

Pronunciation /ˈɡrʌndɪz/

plural noun

informal Australian, New Zealand
  • Underpants.

    • ‘he had his trousers and his grundies round his ankles’
    • ‘He was pictured proudly holding his baby, not grappling with his grundies.’
    • ‘Not much fun, though, with my damp grundies beginning a savage chafing.’
    • ‘The soiled grundies were disposed of in the traditional manner - down a nearby pub toilet.’
    • ‘Thank the good Lord I'd chosen my chocolate-brown satin Victoria's Secret grundies that morning, instead of something less slippy.’
    • ‘The worst of it was that, being at work, I had no recourse to the grundies drawer to swap them for a man-sized set.’
    • ‘After the copulating commuters reach their sexual destination, they put their grundies back on again and sit back in their seats under a fluffy pink cloud of mutual satisfaction.’
    • ‘He flung his soiled grundies across the car park.’
    • ‘Michael Keaton has jettisoned all memory of those saggy Birdman grundies by slipping into this absolutely killer Ralph Lauren number.’
    • ‘He's persuaded footballing legend David Beckham to join him in stripping down to his grundies.’
    • ‘He spent a good deal of the game cacking his grundies.’

Origin

1990s from undies, influenced by the name Reg Grundy (b. 1923), an Australian media producer.