Bonkers and Berserk

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

Berserk and bonkers are semantically related In some cases you can use "Berserk" instead an adjective "Bonkers".

Berserk adjective - Frenzied as if possessed by a demon.

Bonkers and berserk are semantically related in off one's head topic. Sometimes you can use "Bonkers" instead an adjective "Berserk". informal substitute