1 used for describing a substance that easily becomes joined to things that it touches, or sth that is covered with this kind of substance 黏的;黏糊糊的:
These sweets are very sticky.这些糖果非常黏。sticky tape黏胶带
2 (informal 非正式) (used about a situation) difficult or unpleasant (指处境)困难的,叫人为难的