OVERKILL
overkill
(noun) any effort that seems to go farther than would be necessary to achieve its goal
overkill
(noun) the capability to obliterate a target with more weapons (especially nuclear weapons) than are required
Source: WordNet® 3.1
Etymology
Noun
overkill (uncountable)
(literally, military) A destructive capacity that exceeds that needed to destroy an enemy; especially with nuclear weapons.
(by extension) An unnecessary excess of whatever is needed to achieve a goal.
(manufacturing) An unnecessary excess of disposal because of too high criteria of inspection.
Antonym: underkill
Verb
overkill (third-person singular simple present overkills, present participle overkilling, simple past and past participle overkilled)
(transitive) To destroy something with more (nuclear) force than is required.
(manufacturing) To dispose of too many items because of too high criteria of inspection.
Antonym: underkill
To do something excessive to achieve a goal.
Source: Wiktionary