(psychology) an individual whose personality is dominated by instinct or impulse rather than rational thought

Alternative form of reptilian brained

of, or exhibiting a reptilian brain

(archaic) Feeble-minded, harebrained.

Alternative spelling of brain rot

Alternative form of brainworm

plural of brain worm

Alternative form of brainworm

plural of brain-worm

A stupid person. / (by extension) Term of abuse. / Used other than figuratively or idiomatically: see smooth, brain.