adjective, clam·mi·er, clam·mi·est.
- covered with a cold, sticky moisture; cold and damp: clammy hands.
- sickly; morbid: She had a clammy feeling that something was wrong at home.
adjective -mier or -miest
- unpleasantly sticky; moistclammy hands
- (of the weather, atmosphere, etc) close; humid
“soft and sticky,” late 14c., probably from Middle English clam “viscous, sticky, muddy” (mid-14c.), from Old English clæm “mud, sticky clay,” from Proto-Germanic *klaimaz “clay” (cf. Flemish klammig, Low German klamig “sticky, damp,” Old English clæman “to smear, plaster;” cf. clay). With -y (2). Related: Clammily; clamminess.