Ex·tin·guish v. t. [imp. & p. p. Extinguished p pr. & vb. n. Extinguishing.]
1. To quench; to put out, as a light or fire; to stifle; to cause to die out; to put an end to; to destroy; as, to extinguish a flame, or life, or love, or hope, a pretense or a right.
A light which the fierce winds have no power to extinguish. --Prescott.
This extinguishes my right to the reversion. --Blackstone.
2. To obscure; to eclipse, as by superior splendor.
Natural graces that extinguish art. --Shak.
adj : of a conditioned response; caused to die out because of the
absence or withdrawal of reinforcement