1727, "adhesive, inclined to stick," from stick (v.) + -y (2). An Old English word for this was clibbor. First recorded 1864 in the sense of "sentimental;" of situations, 1915 with the meaning "difficult." Of weather, "hot and humid," from 1895. Sticky wicket is 1952, from British slang, in reference to cricket. Related: Stickily; stickiness.
felt sticky and chilly at the same time
sticky weather
a sticky question
stickler
sticks
sticktoitiveness
stickum
stick-up
sticky
stiff
stiffen
stiff-necked
stiffness
stifle