Sentence:  `` I have come to talk with you about the future of humor and comedy '' , I told him , at which he started slightly , and then made us each a stiff drink , with a <WSD>trembling</WSD> hand . 
Meaning of the word marked with <WSD> tags:  vibrating slightly and irregularly; as e.g. with fear or cold or like the leaves of an aspen in a breeze