plumbeous

Mane (Îngilîzî)

1. Consisting of, or resembling, lead.
2. (rare) Dull; heavy; stupid.

Hevwate

addlepated

blockheaded

dopey

fatheaded

leaden

oafish

simpleminded

dym

softheaded

thick as a brick

brain-dead

cerebrally challenged

dumbassed

stoopid

fuckwitted

daffish

Werger

bleifarben

βλάκας

imbécile

plombe

imbecille

tonta

farlocco

domme

idiote

onverstandige

estupid

estúpido

idiota

Etîmolojî (Îngilîzî)

From Latin plumbeus, from plumbum (“lead”).