Bats and Madder

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

Madder and bats are semantically related. In some cases you can replace term "Madder" with "Bats", this adjectives are similar.

Madder noun - Eurasian herb having small yellow flowers and red roots formerly an important source of the dye alizarin.

Bats and madder are semantically related. Sometimes you can use "Bats" instead an adjective "Madder".