6 letters · 15 points in Scrabble
adjective unpleasantly cool and humid
originFrom Middle English clam (“viscous, sticky; slimy”) + -y, from Old English clǣman (“to smear, bedaub”). Compare German klamm (“clammy”) and klemmen (“to be stuck, stick”). See also clam.
Etymology from Wiktionary, CC BY-SA 3.0