'Headless' definitions:

Definition of 'headless'

From: WordNet
adjective
Not having a head or formed without a head ; "the headless horseman"; "brads are headless nails" [ant: headed]
adjective
Not using intelligence [syn: brainless, headless]

Definition of 'Headless'

From: GCIDE
  • Headless \Head"less\, a. [AS. he['a]fodle['a]s.]
  • 1. Having no head; beheaded; as, a headless body, neck, or carcass. [1913 Webster]
  • 2. Destitute of a chief or leader. --Sir W. Raleigh. [1913 Webster]
  • 3. Destitute of understanding or prudence; foolish; rash; obstinate; mindless. [Obs.] [1913 Webster]
  • Witless headiness in judging or headless hardiness in condemning. --Spenser. [1913 Webster]

Synonyms of 'headless'

From: Moby Thesaurus