hardener

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US/ˈhɑɹdn̩ɚ/US/ˈhɑɹdənɚ/UK/ˈhɑːdn̩ə/UK/ˈhɑːdənə/

noun

One who, or that which, hardens.

“the hardener of hearts”

UncommonScrabble 12
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Meanings

nounhardener (plural hardeners)

plural hardeners

  1. One who, or that which, hardens.

    the hardener of hearts

  2. A chemical substance added to something in order to harden it; used especially with paints, varnishes and resins.

Origin

From harden + -er.

Full word history & related roots →

Rhymes & wordplay

Anagrams

reharden
Cite this entry
APA

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

MLA

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

Chicago

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

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