Kooky and Potty

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

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

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.

Kooky and potty are semantically related in deranged topic. Sometimes you can use "Kooky" instead an adjective "Potty", if it concerns topics such as mentally strange.