8 letters · 20 points in Scrabble
verb make (more) humid
originEtymology tree Latin ūmeō Proto-Indo-European *dʰeh₁-der. Proto-Italic *-iðos Latin -idus Latin ūmidus Latin hūmidusder. Old French humideder. English humid Latin -i- Proto-Indo-European *dʰeh₁-der. Proto-Italic *-fakāō Latin -ficō Latin -ificāreder. Old French -ifierbor. Middle English -ifien English -ify English humidify From humid + -ify.
Etymology from Wiktionary, CC BY-SA 3.0