stickiness

Short definition from Wiktionary

Noun

1. 1
   The property of sticking or adhering; adhesion.
2. 2
   Warmth and humidity, as on a muggy day.
3. 3
   Of prices or wages: the tendency to stay the same despite changes in the economy.
4. 4
   The presence of unique attributes that make a product indisposable and valuable to its owner.
5. 5
   A research measure that captures the extent to which viewers wish to spend more time looking at or reading a print advertisement.
6. 6
   An overemotional attachment to others; clinging in interpersonal relations; difficulty with ending conversations.