overkill

Etymology

The verb is formed from English over- + kill.^[2][3][4] The OED derives the noun from the verb by conversion,^[2] whereas Merriam-Webster Unabridged and Webster's Third form it from over and the noun kill,^[5][6] and Etymonline from over- and the verb.^[3] The OED compares the earlier noun overkilling, recorded from 1927 for killing more animals than is advisable, so that the supply diminishes.^[2] Dictionary.com calls the word an Americanism of 1945–50.^[7]

Earliest recorded meaning

As a verb, to destroy a target more thoroughly than is necessary: 1946, in the Sun of Baltimore.^[2]

Semantic evolution

The noun first referred to nuclear arsenals:^[3] the OED records it from 1957, in the New York Times, for military destruction beyond strategic needs and the capacity of nuclear weapons to destroy many times over.^[2] Merriam-Webster Unabridged also dates the noun to 1957,^[5] while the 1989 edition of the OED, Merriam-Webster's Collegiate and Etymonline give 1958.^[8][9][3] The figurative sense, too much of something or excessive action, followed in 1964,^[2] 1965 in Etymonline,^[3] and in 1965 the noun was also used of killing animals beyond what is needed.^[2]

Timeline

• 1946 – verb, to destroy a target more than is necessary.^[2]
• 1957 – noun, destruction beyond strategic needs; the capacity of nuclear weapons to destroy many times over.^[2][5]
• 1964 – figurative, excessive use, treatment or action.^[2]
• 1965 – the killing of animals in excess of requirements.^[2]

Meanings

Noun

1. A destructive capacity, especially of nuclear weapons, far greater than is needed to destroy a target or an enemy.^[10][5][11]
2. An excess of something, or of an action, beyond what is needed or suitable: Three alarms on one small flat seemed like overkill.^[10][5][2]
3. Killing beyond what is intended or needed.^[11][9][2]

Verb

1. To destroy a target with more force, especially nuclear force, than is necessary.^[5][11][2]

References

1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
5. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
6. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
7. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
8. ^ Simpson, J. A.; Weiner, E. S. C., eds. (1989), The Oxford English Dictionary, 2nd ed., Oxford: Clarendon Press
9. ^ a b Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
10. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins
11. ^ a b c The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin