Loon and Nut case

Loon noun - A person judged to be legally or medically insane.

Nut case and loon are semantically related in crackpot topic. In some cases you can use "Nut case" instead a noun "Loon", when it comes to topics like loony.

Nearby Word: loony

Nut case noun - A whimsically eccentric person.

Loon and nut case are semantically related in loony topic. Sometimes you can use "Loon" instead a noun phrase "Nut case".