Have bats in the belfry and Raving mad

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

Raving mad adjective - Talking or behaving irrationally.

Have bats in the belfry and raving mad are semantically related. You can use "Have bats in the belfry" instead an adjective phrase "Raving mad".