Added 9 October 2026
harden
/ˈhɑɹdn̩/ verb
In Latin: dūrescō, rigēscō Wiktionary
verb Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about harden at Wordnik → Where our words come from →
Origin
From Middle English hardenen, equivalent to hard + -en. Cognate with Danish hærdne (“to harden; cure”), Swedish hårdna (“to harden”), Norwegian herdne (“to harden”), Icelandic harðna (“to harden”).
From Wiktionary, via Kaikki.org (CC BY-SA)