- Trembling, quivering, or shaking.
- 1850, Nathaniel Hawthorne, chapter 3, in The Scarlet Letter:
- The trying nature of his position drove the blood from his cheek, and made his lips tremulous.
- 1919, William MacLeod Raine, chapter 27, in A Man Four-Square:
- "Thank God!" he cried brokenly, all the pent emotion of the long night vibrant in his tremulous voice.
- Timid, hesitant, or unconfident.
- 1891, Grant Allen, chapter 15, in The Great Taboo:
- "You have lived here long?" Felix asked, with tremulous interest, as he took a seat.
- 2009 Oct. 7, Christopher Kimball, "Opinion: Gourmet to All That," New York Times (retrieved 18 Aug 2012):
- This, hard on the heels of the death of Julia Child in 2004, makes one tremulous about the future.
- (trembling, quivering, or shaking): quaking, shaking, trembling, tremulant
- (timid, hesitant, or unconfident): timid, wavering
trembling or shaking