Bad
shun - To persistently avoid, ignore, or reject (someone or something) through antipathy or caution

When David tried to join in the conversation at the club, they ignored him, and he suspected that he was being shunned because he had a different religion than they did.
tremor - A slight shaking movement, such as one caused by an earthquake or instability; also a subtle or faint sign of emotion, such as fear or excitement in the voice or body.

Because he was nervous, his voice had a significant tremor during the presentation.