shaking from fear, cold, excitement, etc.

Is trembled an adjective or adverb?

Derived forms of tremble trembling, adjectivetremblingly, adverbtrembly, adjective.

Is tremble a noun verb or adjective?

verb (used without object), trem·bled, trem·bling. to shake involuntarily with quick, short movements, as from fear, excitement, weakness, or cold; quake; quiver.