This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of, relating to, or induced by a mental disorder; insane or mad.

adj. Disordered in the understanding; giddy; thoughtless.

adj. Disordered in the understanding; giddy; thoughtless.

Disordered in the understanding; fantastic; crotchety; crazed.

adj. affected with madness or insanity

"With neither brainsick Trooper Qeengat nor the dead female able to contradict his story, he could be very persuasive."

insane   

giddy    thoughtless    derange   

soul-sick    groundsfor    traced    footsore    ponderable    Hera    wanna-be    shamefaced    bull-goose    inferable