trepido

Etymology 1
From.

Adjective

 * 1) anxious

Etymology
From.

Verb

 * 1) to hurry with alarm, bustle about anxiously, to be in a state of confusion, agitation, or trepidation
 * 2) to tremble
 * 3) to be afraid
 * 4) to waver
 * 1) to be afraid
 * 2) to waver
 * 1) to waver