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deadset

adjective, adverb, interjectionInformal

A Australian English slang term. Browse all Australian slang.

What it means

  1. Genuine; genuinely. Deadset legend, deadset the best thing I've eaten.

  2. As a standalone question or exclamation: are you serious? / I'm serious.

In use

  • Deadset, I've never seen anything like it.

  • —They cancelled the whole thing. —Deadset?

Other forms

Spellings and variants:
dead set