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.
- To put out (a fire, for example); quench.
- To put an end to (hopes, for example); destroy. See Synonyms at abolish.
- To obscure; eclipse.
- Law To settle or discharge (a debt).
- Law To nullify: extinguished their title to the property.
- Psychology To bring about the extinction of (a conditioned response).