1) Acephalous 2) Beheaded 3) Brainless 4) Decapitated 5) Unintelligent 6) Unled 1) Acephalous 2) Beheaded 3) Decapitated 4) Exclusively Saxon word 5) Exclusively Anglo word 6) Like a literary horseman 7) Not using intelligence 8) Without a leader 9) Word with Anglo-Saxon origins 10) Word of purely Anglo origin 
• (a.) Destitute of understanding or prudence; foolish; rash; obstinate. • (a.) Destitute of a chief or leader. • (a.) Having no head; beheaded; as, a headless body, neck, or carcass.
Head'less adjective [ Anglo-Saxon heáfodleás .] 1. Having no head; beheaded; as, a headless body, neck, or carcass. 2. Destitute of a chief or leader. Sir W. Raleigh. 3. Destitute of understanding or prudence; foolish; rash; obstinate. [ Obsolete] �...
[adj] - not having a head or formed without a head
adjective not having a head or formed without a head ; `the headless horseman`; `brads are headless nails`