Answer:
definition of tremulous would be shaking or quivering from fear, usually while acting very timid
Step-by-step explanation:
After reading Across Five Aprils by Irene Hunt I found the word "tremulous" in Chapter 2. It was used in the sentence "her voice is tremulous from fear of being wrong and out of place". From this context, the definition of tremulous would be shaking or quivering from fear, usually while acting very timid. I believe this would be the best definition of this word since when you speaking with fear in your heart your voice tends to become shaky and many times incoherent due to the fear, as was happening in this part of Chapter 2.