humidify

H4U1M3I1D2I1F4Y4
/hjuːˈmɪdɪfaɪ/

verb

To increase the humidity in the air.

Similar
moisturizemoisturise
Opposite
dehumidify
OriginProto-Italic *θakos ← Proto-Indo-European *dʰeh₁- ← English humid →
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Meanings

verbhumidify (third-person singular simple present humidifies, present participle humidifying, simple past and past participle humidified)

present singular third person humidifies · participle present humidifying · participle past humidified · past humidified

  1. To increase the humidity in the air.

    The air-handling equipment humidifies, dehumidifies, and distributes the correct amount of fresh air into every zone and eliminates all smoke, dust, and odors, with electric precipitrons.

    1949, Proceedings of the ... Consolidated Convention of the International Brotherhood of Boiler Makers, Iron Ship Builders, and Helpers of America, page 159

Synonyms & antonyms

Opposite
dehumidify

verbmake (more) humid

Similar
moisturizemoisturise
Opposite
dehumidify
Broader
moistenwashdampen
Also see
moisturisemoisturize

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Italic*ūmo-
  2. Latinūmeō
  3. Proto-Indo-European*dʰeh₁-
  4. Latinūmidus
  5. Latinhūmidus
  6. Old Frenchhumide
  7. Englishhumid
  8. Proto-Indo-European*dʰeh₁-
  9. Proto-Italic*θakos
  10. Englishhumidify

From humid + -ify.

Full word history & related roots →

Translations

Bulgarian овлажнявам
  • овлажнявам (ovlažnjavam)To increase the humidity in the air.
Catalan humidificar
  • humidificarTo increase the humidity in the air.
French humidifier
  • humidifierTo increase the humidity in the air.
German befeuchten
  • befeuchtenTo increase the humidity in the air.
Italian umidificare
  • umidificareTo increase the humidity in the air.
Portuguese humidificar, umidificar
  • humidificarTo increase the humidity in the air.
  • umidificarTo increase the humidity in the air.
Spanish humidificar
  • humidificarTo increase the humidity in the air.
Tagalog ipahalumigmig
  • ipahalumigmigTo increase the humidity in the air.
Cite this entry
APA

humidify. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/humidify

MLA

“humidify.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/humidify. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “humidify,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/humidify.

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