hesitating - wavering - unsteady - weakening - shaky - tentative - stumbling - indecisive - uncertain
“Faltering” describes something that is becoming weak, unsteady, or uncertain. It is often used for actions, voices, steps, or progress that lack confidence or strength and may stop or break down. A faltering voice may shake or trail off, faltering steps may be irregular or unstable, and faltering progress suggests that advancement is slowing or in danger of failing. The word frequently carries a sense of doubt, insecurity, or loss of momentum. It can be applied to both physical movements and more abstract processes like negotiations, relationships, or careers that are struggling to continue smoothly.