The answers to the clues below will have something in common.

1. Amused look, as when you have a secret
2. Sign of extreme joy
3. Powerful sense of ambition or determination
4. Holding a grudge
5. Hoarse or raspy when speaking
6. Left with a very unpleasant impression of something
7. Result of an explosion, perhaps
8. Nervousness, as before giving a speech
9. Sure thing -  as compared to a possibility

Answers:

1. Gleam in your eye
2. Wings on your feet 
3. Fire in your belly
4. Chip on your shoulder
5. Frog in your throat
6. Bad taste in your mouth
7. Ringing in your ears
8. Butterflies in your stomach
9. Bird in your hand