What is the meaning of sticky?

1. A term used by economists to describe changes in dependent variables that tend to lag behind changes in the independent variables with which they are associated. For example, time lags are known to exist between changes in prevailing interest rates and changes in the rates offered on bank core deposit products. But they are' sticky'. Almost all banks are able to change the rates paid on their administered-rate deposit products after rates for money market instruments have already changed. 2. An informal term used to describe the propensity of a deposit. Of indeterminate maturity to remain a stable source of funding.