destroy

(verb) do away with, cause the destruction or undoing of. Synonyms: destruct. Example: "The fire destroyed the house."

(verb) destroy completely; damage irreparably. Synonyms: ruin. Examples: "You have ruined my car by pouring sugar in the tank!." "The tears ruined her make-up."

(verb) defeat soundly. Synonyms: demolish. Example: "The home team demolished the visitors."

(verb) put (an animal) to death. Synonyms: put down. Examples: "The customs agents destroyed the dog that was found to be rabid." "The sick cat had to be put down."