All 4 Uses

tremulous
in
Something Wicked This Way Comes
(Auto-generated)

Here the akimbo Skeleton one might play like a piccolo; here the Blimp who could be punctured every night, pumped up at dawn; here the midget known as The Wart who could be mailed parcel post dirt-cheap; and next to him an even littler accident of cell and time, a Dwarf so small and perched in such a way you could not see his face behind the cards clenched before him in arthritic and tremulous oak-gnarled fingers.†
Part 1

tremulous = quivering (shaky)
Just as they felt that balloon sift down like an autumn rain, so she could feel their souls disinhabit, reinhabit their tremulous nostrils.†
Part 2
Now, tremulously, experimentally, daring to test, the Witch inhaled.
Part 2 *

tremulously = with quivering (shakiness)
Did or did he not perceive, with the tremulous tip of eyelash if not the eye, their passage through, their wait beyond, warm wax amongst cold, waiting to be key-wound by terrors, run free in panics?†
Part 3

tremulous = quivering (shaky)

Definitions:

(1) (tremulous)
quivering (unsteady or shaky) -- usually from weakness or fear -- especially of the voice
(2) (meaning too rare to warrant focus)