Added 10 October 2026
muggy
/ˈmʌɡi/ adjective
In Latin: aestifer Wiktionary
adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about muggy at Wordnik → Where our words come from →
Origin
From dialectal English mug (“fog, mist; Scotch mist”) + -y, ultimately from Old Norse mugga (“drizzle, mist”); borrowed some time before 1390, when a derived verb, Middle English mugen (“of a fog: to drizzle”), is attested.
From Wiktionary, via Kaikki.org (CC BY-SA)