n (context|economics|of prices or wages) the tendency to stay the same despite changes in the economy
n (marketing|interface design) the presence of unique attributes that make a product indisposable and valuable to its owner
n (advertising) a research measure that captures the extent to which viewers wish to spend more time looking at or reading a print ad.
n (psychology) an overemotional attachment to others; clinging in interpersonal relations; difficulty with ending conversations