Third-person singular simple present indicative form of trepidate

A fearful state; a state of concern or hesitation. / An involuntary trembling, sometimes an effect of paralysis, but usually caused by terror or fear; quaking; quivering.

Timid, timorous, fearful.

plural of trepidation

(uncommon, transitive) To cause to experience trepidation. / (uncommon, intransitive) To experience trepidation.

(rare) Trembling caused by fear or nervous agitation.

(rare) Trembling with fear or emotion. / (medicine, archaic) Marked by trembling or tremor.

trepidation

plural of trepidity

(very rare, nonstandard) Causing or having the quality of trepidation.