mothball

moth·ball
M3O1T1H4B3A1L1L1
UK/ˈmɒθbɔːl/US/ˈmɔθˌbɔl/US, cot caught merger/ˈmɑθˌbɑl/

noun

A small ball of chemical pesticide (originally camphor and now typically naphthalene or paradichlorobenzene) and deodorant placed in or around clothing and other articles to deter moth larvae which may damage them.

“They mothballed the old version after the new one came out.”

Similar
deferset asidecamphor ball
RareScrabble 15

Meanings

nounmothball (plural mothballs)

plural mothballs · alternative moth-ball · alternative moth ball

  1. in pluralA small ball of chemical pesticide (originally camphor and now typically naphthalene or paradichlorobenzene) and deodorant placed in or around clothing and other articles to deter moth larvae which may damage them.

    There were two carloads of equipments. Upon their return to the armory the blankets were shook and repacked with mothballs; […]

    1904, E. P. Burlingame, “Financial Statement to Accompany the Report of the Adjutant General”, in Annual Report of the Adjutant General of Oklahoma: for the Year Ending December 31, 1904 […], Guthrie, Okla.: The State Capital Company, →OCLC, page 25
    3 more examples

    Me and Solly, as I now called him, prepared to shake off our moth-balls and wing our way against the arc-lights of the joyous and tuneful East.

    1907, O. Henry [pseudonym; William Sydney Porter], “Seats of the Haughty”, in Heart of the West, New York, N.Y.: Doubleday, Page & Company for Review of Reviews Co., →OCLC, page 82

    The church interior was as comfortable as Sunday-morning toast and marmalade— […] gorgeous stained-glass windows, and a general polite creaking of ladies' best stays and gentlemen's stiff shirt-bosoms, and an odor of the best cologne and moth-balls.

    1914 February, Sinclair Lewis, “He Becomes Mildly Religious and Highly Literary”, in Our Mr. Wrenn: The Romantic Adventures of a Gentle Man, New York, N.Y.: Grosset & Dunlap, →OCLC, pages 213–214

    Mr. President, I have supported the draft and shall do so as long as it is necessary. But I believe that when a draftee has served his 2 years and is released for normal civilian life, he should be free to place his uniform in mothballs until the Nation's safety requires his return to active duty.

    1955 July 21, [Richard Lewis] Neuberger, “Education Benefits rather than Compulsion for a Ready Reserve Force”, in Congressional Record: Proceedings and Debates of the 84th Congress, First Session (United States Senate), volume 101, part 9, Washington, D.C.: United States Government Printing Office, →ISSN, →OCLC, page 11131, column 2
verbmothball (third-person singular simple present mothballs, present participle mothballing, simple past and past participle mothballed)

present singular third person mothballs · participle present mothballing · participle past mothballed · past mothballed

  1. transitiveTo store (clothing, etc.) with mothballs (noun sense 1).
  2. figurativelytransitivechiefly passive voiceTo stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future.

    They mothballed the old version after the new one came out.

    5 more examples

    There is already considerable spare primary capacity because the coal is accessible and merely needs the men and machines to get it. We are unaware, however, of the physical and economic possibilities of mothballing pits, or of the extent to which the present surplus capacity of 40 million tons would match the capacity of loss-making pits which one would like to close.

    1965 October 16, “News and Views: Energy Forecasts for Britain”, in Nature: A Weekly Journal of Science, volume 208, number 5007, London: Macmillan (Journals); New York, N.Y.: St. Martin’s Press, →OCLC, page 229, column 2

    Following the war, along with the inevitable sharp reduction of forces, including the "mothballing" of a considerable part of the fleet as an inactive reserve, there were a few important developments affecting the navy.

    1967, Robert G[reenhalgh] Albion, “United States. [33. Navy.]”, in The Encyclopedia Americana […], international edition, volume 27 (Trace to Venial Sin), New York, N.Y.: Americana Corporation, →OCLC, page 709, column 2

    Years later, he [Walter Simonson] characterized the company's behavior as "abrupt, rude, and disrespectful," and railed against the mothballing of veteran creators.

    2012, Sean Howe, chapter 16, in Marvel Comics: The Untold Story, New York, N.Y.: Harper, →ISBN

    Some schools might have an art studio, an area of forestry in the playground, or a performance stage in the hall – all exceptional assets. Just check they get plenty of use and aren't mothballed while the school concentrates on (you guessed it) maths and literacy.

    2014 September 23, a teacher [pseudonym], “Choosing a primary school: a teacher’s guide for parents”, in Alan Rusbridger, editor, The Guardian, London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 26 Jul 2025

    In the short term NR [National Rail] could well mothball the line given its lack of traffic.

    2021 March 10, Paul Shannon, “Freight’s New Gateways Score Highly on Location and Layout”, in Rail, number 926, Peterborough, Cambridgeshire: Bauer Media, →ISSN, →OCLC, page 34

    Antonyms: demothball, unmothball

  3. figurativelytransitivechiefly passive voiceTo stop work on (a plan, project, etc.) for the time being; to postpone, to shelve.

    The fact that the START Treaty has just been signed is reason enough not to build one rail garrison train before mothballing the project.

    1991 September 26, [Carl] Levin, “Department of Defense Appropriations Act, Fiscal Year 1992”, in Congressional Record: Proceedings and Debates of the 102d Congress, First Session (United States Senate), volume 137, part 17, Washington, D.C.: United States Government Printing Office, →ISSN, →OCLC, page 24260, column 3

    Synonyms: defer, set aside

Synonyms & antonyms

verbTo stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future.

verbTo stop work on (a plan, project, etc.) for the time being; to postpone, to shelve.

More synonyms by meaning

nouna small sphere of camphor or naphthalene used to keep moths away from stored clothing

Similar
camphor ball

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

The noun is derived from moth + ball. The verb is derived from the noun.

Full word history & related roots →

Translations

Bulgarian топче нафталин, консервирам
  • топче нафталин (topče naftalin)small ball of chemical pesticide to deter moth larvae
  • консервирам (konserviram)to stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • прибирам (pribiram)to stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Chinese Cantonese 衛生球 /卫生球, 樟腦丸 /樟脑丸
  • 衛生球 /卫生球 (wai⁶ sang¹ kau⁴)small ball of chemical pesticide to deter moth larvae
  • 樟腦丸 /樟脑丸small ball of chemical pesticide to deter moth larvae
Chinese Mandarin 臭球, 臭球兒 /臭球儿
  • 臭球 (chòuqiú)small ball of chemical pesticide to deter moth larvae
  • 臭球兒 /臭球儿 (chòuqiúr)small ball of chemical pesticide to deter moth larvae
  • 衛生丸子 /卫生丸子 (uei4 sen1 yenn2 zr)small ball of chemical pesticide to deter moth larvae
  • 衛生球 /卫生球 (wèishēngqiú)small ball of chemical pesticide to deter moth larvae
  • 樟腦丸 /樟脑丸 (zhāngnǎowán)small ball of chemical pesticide to deter moth larvae
Czech naftalín
  • naftalínsmall ball of chemical pesticide to deter moth larvae
Danish mølkugle
  • mølkuglesmall ball of chemical pesticide to deter moth larvae
Dutch mottenbal, in de mottenballen leggen
  • mottenbalsmall ball of chemical pesticide to deter moth larvae
  • in de mottenballen leggento stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Finnish koinmyrkky, koipallo
  • koinmyrkkysmall ball of chemical pesticide to deter moth larvae
  • koipallosmall ball of chemical pesticide to deter moth larvae
  • suojata koipalloillato store (clothing, etc.) with mothballs
  • hyllyttääto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
French boule de naphtaline
  • boule de naphtalinesmall ball of chemical pesticide to deter moth larvae
German Mottenkugel, einmotten
  • Mottenkugelsmall ball of chemical pesticide to deter moth larvae
  • einmottento store (clothing, etc.) with mothballs
  • einmottento stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Greek ναφθαλίνη
  • ναφθαλίνη (nafthalíni)small ball of chemical pesticide to deter moth larvae
Hungarian molyirtó, elhalaszt
  • molyirtósmall ball of chemical pesticide to deter moth larvae
  • elhalasztto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • elnapolto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • félreteszto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • tartalékba teszto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Icelandic mölkúla
  • mölkúlasmall ball of chemical pesticide to deter moth larvae
Italian naftalina, pallina tarmicida
  • naftalinasmall ball of chemical pesticide to deter moth larvae
  • pallina tarmicidasmall ball of chemical pesticide to deter moth larvae
Japanese 〜を使わずにとっておく
  • 〜を使わずにとっておくto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Korean 좀약
  • 좀약 (jomyak)small ball of chemical pesticide to deter moth larvae
Norwegian Bokmål møllkule, legge på is
  • møllkulesmall ball of chemical pesticide to deter moth larvae
  • legge på isto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Portuguese naftalina, engavetar
  • naftalinasmall ball of chemical pesticide to deter moth larvae
  • engavetarto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Romanian naftalină
  • naftalinăsmall ball of chemical pesticide to deter moth larvae
Russian нафтали́новый ша́рик, законсервировать
  • нафтали́новый ша́рик (naftalínovyj šárik)small ball of chemical pesticide to deter moth larvae
  • законсервировать (zakonservirovatʹ)to stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Slovak naftalín
  • naftalínsmall ball of chemical pesticide to deter moth larvae
Spanish bola de alcanfor, bola de naftalina
  • bola de alcanforsmall ball of chemical pesticide to deter moth larvae
  • bola de naftalinasmall ball of chemical pesticide to deter moth larvae
Swedish malkula, förpuppa
  • malkulasmall ball of chemical pesticide to deter moth larvae
  • förpuppato stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • lägga i malpåseto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • lägga på hyllanto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
  • lägga på isto stop using (something), and often to put it in storage; specifically, while keeping it in good condition so it can be used in the future
Tamil அந்துருண்டை
  • அந்துருண்டை (anturuṇṭai)small ball of chemical pesticide to deter moth larvae
Thai ลูกเหม็น
  • ลูกเหม็น (lûuk-měn)small ball of chemical pesticide to deter moth larvae
Turkish güve ilacı, naftalin
  • güve ilacısmall ball of chemical pesticide to deter moth larvae
  • naftalinsmall ball of chemical pesticide to deter moth larvae
Vietnamese băng phiến, long não
  • băng phiếnsmall ball of chemical pesticide to deter moth larvae
  • long nãosmall ball of chemical pesticide to deter moth larvae
Welsh pêl gamffor
  • pêl gamfforsmall ball of chemical pesticide to deter moth larvae
Cite this entry
APA

mothball. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/mothball

MLA

“mothball.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mothball. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “mothball,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/mothball.

Source: mothball on Wiktionary, CC BY-SA 4.0.