Abirritant :: Abirritant (n.) A medicine that diminishes irritation.
Abirritate :: Abirritate (v. t.) To diminish the sensibility of; to debilitate.
Abirritation :: Abirritation (n.) A pathological condition opposite to that of irritation; debility; want of strength; asthenia.
Abirritative :: Abirritative (a.) Characterized by abirritation or debility.