falteringly

intransitive verb

1. to move uncertainly or unsteadily; totter; stumble
2. to stumble in speech; speak haltingly; stammer
3. to act hesitantly; show uncertainty; waver; flinch: to falter under enemy fire
4. to lose strength, certainty, etc.; weaken: the economy faltered

Origin: ME faltren, prob. < ON, as in faltra(sk), be uncertain

transitive verb

noun

1. a faltering
2. a faltering sound