Have bats in the belfry and Non compos mentis

Non compos mentis and have bats in the belfry are semantically related. In some cases you can use "Non compos mentis" instead an adjective phrase "Have bats in the belfry".

Non compos mentis adjective - Having or showing a very abnormal or sick state of mind.

Have bats in the belfry and non compos mentis are semantically related. You can use "Have bats in the belfry" instead an adjective phrase "Non compos mentis".