harebrained

Mane (Îngilîzî)

1. Absurd, foolish or stupid.
2. Frivolous and silly; featherbrained or scatterbrained; stupid.

Hevwate

mad

foolish

insane

idiotic

light-headed

ludicrous

madcap

meshuga

raving mad

scatterbrained

senseless

silly

stupid

versatile

wild

witless

cockamamie

airheaded

crackbrained

fatuous

Werger

fou

insensé

närrisch

farfelu

écervelé

imbezil

folle

blödsinnig

idiotisch

crétin

aberrant

geistesschwach

imbécile

ausgelassen

أحمق

Etîmolojî (Îngilîzî)

From hare + brained.