Webster's Revised Unabridged Dictionary · 1913

Obtund

Obtund , transitive verb

[Latin obtundere, obtusum; ob (see Ob-) + tundere to strike or beat. See Stutter.]

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. [Archaic] — Harvey
They... have filled all our law books with the obtunding story of their suits and trials. — Milton