tremulously

From tremulous +‎ -ly.

tremulously (comparative more tremulously, superlative most tremulously)

In a trembling, quivering, or shaking manner.
In a timid, hesitant, or unconfident manner; betraying fear in the voice.
- 1912 January, Zane Grey, chapter 20, in Riders of the Purple Sage […], New York, N.Y.; London: Harper & Brothers Publishers, →OCLC:
  "Are you—all—all right?" she asked, tremulously.
- 1956 [1880], Johanna Spyri, Heidi, translation of original by Eileen Hall, page 49:
  `This time place really is falling down,' she cried tremulously.

in a trembling, quivering, or shaking manner

in a timid, hesitant, or unconfident manner

English