damper

Etymology

It is formed from English damp + -er,^[2][3][4][5] as an agent noun from the verb damp.^[3] The verb is from the noun damp, recorded from the late 14th century in the sense "to suffocate", as with the foul air of a mine.^[3][2] The noun meant noxious vapour and may come from Middle Low German damp (“vapour, steam, smoke”),^[3][6] ultimately from Proto-Germanic *dampaz, the source of German Dampf (“vapour, steam”) and Old Norse dampi (“dust”).^[3]

Earliest recorded meaning

Something, or someone, that depresses the spirits: 1748, in S. Richardson's Clarissa.^[2][3] Merriam-Webster Unabridged dates this sense to 1707.^[7]

Semantic evolution

The verb damp had meant to check or deaden the force of the spirits since the 1540s,^[3] and the noun was first figurative, for whatever cooled enthusiasm or high spirits.^[2][3] Mechanical senses followed: a padded piece in a piano that stops a string vibrating once the key is released (1783), and a plate in a chimney flue that controls the fire by regulating the draught (1788).^[2][3] Etymonline suggests that either or both of these reinforced the figurative use.^[3] Later devices for checking motion took the name as well: in magnetism (1881), in electric motors (1906) and for a shock absorber on a car (1929).^[2] A damper was also something that took the edge off the appetite, a snack before dinner: Grose explained it in 1785 by its damping the appetite,^[8] and the OED dates the sense from 1804.^[2] In Australia and New Zealand the name passed to a plain bread of flour and water baked in the ashes of a campfire, recorded from 1825 or 1827,^[9][2][10] which the Australian National Dictionary Centre derives from the British snack sense.^[9] Morris thought it more likely that the name came from the water added to the flour.^[10] Thieves' slang used damper for a till or cash drawer from 1846.^[2][8] The phrase put a damper on, to dampen the mood of something, is the figurative sense in a set phrase,^[11][7] and in Cumbrian dialect to put the damper on someone was to take him down a peg.^[12]

Timeline

• 1748 – something or someone that depresses the spirits.^[2][3] Merriam-Webster Unabridged dates the sense to 1707.^[7]
• 1783 – a piece in a piano that stops a string vibrating.^[2][3]
• 1788 – a movable plate in a flue for regulating the draught.^[2][3]
• 1804 – something that takes the edge off the appetite.^[2] Green's Dictionary of Slang has it from 1785, in Grose.^[8]
• 1827 – in Australia, a plain bread baked in hot ashes.^[2][10] The Australian National Dictionary Centre records it from 1825.^[9]
• 1846 – slang, a till or cash drawer.^[2]
• 1929 – a device for damping mechanical vibrations, such as a shock absorber.^[2]

Meanings

Noun

1. A person, event or circumstance that depresses or discourages; a dulling or checking influence.^[11][7][2]
2. put a damper on: to make something less lively or enjoyable: The storm put a damper on the street fair.^[11][7]
3. A movable plate or valve in the flue of a stove, furnace or fireplace, or in a duct, for regulating the draught.^[11][7][2]
4. A felt pad in a piano or harpsichord that stops a string vibrating when its key is released.^[11][7][2]
5. A device that reduces mechanical, electrical or acoustic oscillations, such as a shock absorber.^[11][2]
6. (chiefly Australia and New Zealand) A simple unleavened bread of flour and water, traditionally baked in the ashes of a campfire.^{[11][2][9][10]}
7. A device for moistening something.^[2]
8. Something that takes the edge off the appetite; a snack before a meal.^[2][8]
9. (slang) A till or cash drawer.^[2][8]

Related words

• damp
• dampen

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p q r s t u v w x Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g h i j k l m 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. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
6. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
7. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
8. ^ a b c d e Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com
9. ^ a b c d Australian National Dictionary Centre, Meanings and Origins of Australian Words and Idioms, https://andc.anu.edu.au
10. ^ a b c d Morris, Edward E. (1898), Austral English: A Dictionary of Australasian Words, Phrases and Usages, London: Macmillan
11. ^ a b c d e f g Collins English Dictionary (2023), Glasgow: HarperCollins
12. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)