Definition of dead set Dead set

We found 4 definitions of dead set from 2 different sources.

What does dead set mean?

Adjective
dead set - fixed in your purpose; "bent on going to the theater"; "dead set against intervening"; "out to win every event"
		bent, bent on, out to

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dead set (Noun)
The rigid pose a hunting dog assumes when pointing out game to a hunter.
dead set (Noun)
By extension, a determined effort.
dead set (Adjective)
Unswervingly dedicated; resolutely determined.