Adj. | 1. | headless - not having a head or formed without a head ; "the headless horseman"; "brads are headless nails" headed - having a head of a specified kind or anything that serves as a head; often used in combination; "headed bolts"; "three-headed Cerberus"; "a cool-headed fighter pilot" |
2. | headless - not using intelligence unintelligent, stupid - lacking intelligence; "a dull job with lazy and unintelligent co-workers" |