overkill

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the capability to obliterate a target with more weapons (especially nuclear weapons) than are required
• Hypernyms:
capability, capableness
2. any effort that seems to go farther than would be necessary to achieve its goal
• Hypernyms:
effort, elbow grease, exertion, travail, sweat