Definitions of sticky:

• adjective:   moist as with undried perspiration and with clothing sticking to the body

  Example: "Felt sticky and chilly at the same time"

• adjective:   hot or warm and humid

  Example: "Sticky weather"

• adjective:   hard to deal with; especially causing pain or embarrassment

  Example: "A sticky question"

• adjective:   having the properties of glue