Brainless (7)
(Other definitions for idiotic that I've seen before include "Fatuous" , "Half witted" , "Silly" , "Absurd, crackbrained" , "without intelligence" .)
'brainless' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for asinine that I've seen before include "Stubborn" , "Silly like a donkey" , "Senseless" , "Stupid (as a donkey?)" , "Really silly, ridiculous" .)
'brainless' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for witless that I've seen before include "Foolish, stupid" , "Lacking sense, understanding or judgment" , "Daft" , "Out of one's mind (maybe scared)" .)
'brainless' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for stupid that I've seen before include "Very silly" , "bovine" , "Without much intelligence" , "Ass" , "Not sensible or intelligent" .)
'brainless' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for empty-headed that I've seen before include "Frivolous" , "Scatterbrained" , "Unintelligent, stupid" , "Given to frivolity" , "Vacuous" .)