faltering

This term conveys a sense of instability and fragility, often suggesting a gradual decline rather than a sudden collapse. When applied to a voice or step, it evokes a physical tremor or hesitation born from fear, weakness, or uncertainty. It is frequently used to describe a loss of confidence in a person's resolve or a lack of steadiness in their physical movement.

In economic or political contexts, the word describes a system that is beginning to fail or lose momentum. It carries a cautionary tone, implying that while the subject has not yet completely crashed, its continued success is no longer guaranteed. It is more nuanced than "failing," as it emphasizes the process of stumbling or wavering.