غبي بالإنجليزي

birdbrained, bonehead, boneheaded, brain-dead, brainless, bubbleheaded, chuckleheaded, dense, dim, dim-witted, doltish, dull, dumb, empty-headed, mindless, obtuse, opaque, simple, slow, slow-witted, unintelligent, unsmart, vacuous, weak-minded, witless

apt, brainy, bright, brilliant, clever, fast, hyperintelligent, intelligent, keen, quick, quick-witted, sharp, sharp-witted, smart, supersmart, ultrasmart