nervousness

State or quality of being nervous.

Definition: anxious state
Antonyms: calm, calmness, collectedness

Quotes:

"If you're not just a little bit nervous before a match, you probably don't have the expectations of yourself that you should have." - Hale Irwin

"Oh, great. This is going to be like shooting baskets with Magic Johnson watching. [On watching Independence Day with President Clinton]" - Bill Pullman

"Past tense means you used to be nervous." - Source Unknown