Ο όρος 'unintelligent' βρέθηκε επίσης στις εγγραφές:
Στην αγγλική περιγραφή:
birdbrain
- brainless
- daft as a brush
- dim-witted
- divvy
- dizzy
- dozy
- dullard
- dumbo
- dummy
- empty-headed
- gormless
- half-witted
- mouth-breather
- retard
- simple
- simpleminded
- slow-witted
- stupidly
- The lights are on but nobody's home
- thick-skulled
- thickheaded
- witless