1. tremulous - Adjective
2. tremulous - Adjective Satellite
Shaking; shivering; quivering; as, a tremulous limb; a tremulous motion of the hand or the lips; the tremulous leaf of the poplar.
Affected with fear or timidity; trembling.
Source: Webster's dictionarythe old lady's quavering voice Source: Internet
spoke timidly in a tremulous voice Source: Internet