
Creep into
Gradual Increase
The change is often too slow to notice immediately, but becomes obvious over time.

Laziness began to creep into the team's practice sessions.
Negative Tendency
Often used to describe negative developments or the onset of problems.

Complacency can creep into a successful company's work ethic.
Subtlety
The process described is not direct or forceful, but subtle and possibly unnoticed at first.

Doubt began to creep into her mind about the decision.
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