Nuts and Testis

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

Testis is a synonym for nuts. In some cases you can use "Testis" instead a noun "Nuts".

Testis noun - One of the two male reproductive glands that produce spermatozoa and secrete androgens.

Nuts is a synonym for testis in organs topic. You can use "Nuts" instead a noun "Testis", if it concerns topics such as male testicles.