adjective “sticky”
 sticky, comparative stickier, superlative stickiest
- able to stick to things; gluey or tacky Sign up to see the translation of definitions and examples into any language. 
 Be careful with the glue—it's very sticky. 
- having glue on one side so that it can be stuck to a surface Let's place some sticky notes on the wall. 
- (informal, of weather) hot and humid, making you feel uncomfortable The sticky weather made it hard to sleep without air conditioning. 
- (informal) difficult or tricky to deal with Negotiating the contract was a sticky situation. 
- (internet) fixed at the top of a list or page; pinned The forum thread was made sticky so everyone could see the rules. 
- (computing) remaining active or in effect; persistent The settings are sticky and will be saved even after you restart the program. 
- (in economics) slow to change in response to economic factors Wages can be sticky during an economic downturn. 
noun “sticky”
 singular sticky, plural stickies
- a small piece of paper with an adhesive strip on the back, used for temporary notes I left a sticky on your desk reminding you about the meeting. 
- (internet) a message or post that stays at the top of a forum or chat thread Be sure to read the sticky before posting in this forum.