complacency
n. uncountablen. a feeling of being too satisfied with yourself or your situation. Because of this feeling, you stop trying to improve or do not see possible dangers.
n. a feeling of quiet pleasure or security, often while unaware of some potential danger or defect. Frequently associated with a lack of critical self-appraisal or a failure to maintain standards.
Success can sometimes lead to dangerous complacency.
The team's recent winning streak led to a sense of complacency that caused them to lose the final match.
Economists warn that market complacency regarding inflation could lead to a sudden correction if interest rates rise faster than investors currently anticipate.
Late Middle English complacence, from Late Latin complacentia. Compare French complaisance.
Often paired with the preposition 'about' or 'regarding'.