Crackpot and Potty

Crackpot adjective - Having or showing a very abnormal or sick state of mind.

Potty and crackpot are semantically related (British) In some cases you can use "Potty" instead an adjective "Crackpot".

Potty adjective - Being or characteristic of a person who has an offensive air of superiority and tends to ignore or disdain anyone regarded as inferior.

Crackpot and potty are semantically related in crazy topic. Sometimes you can use "Crackpot" instead an adjective "Potty".