Obtund :: Obtund (v. t.) To reduce the edge, pungency, or violent action of; to dull; to blunt; to deaden; to quell; as, to obtund the acrimony of the gall..
Obtundent :: Obtundent (n.) A substance which sheathes a part, or blunts irritation, usually some bland, oily, or mucilaginous matter; -- nearly the same as demulcent..
Obtunder :: Obtunder (n.) That which obtunds or blunts; especially, that which blunts sensibility..