Expectancy (noun)

1. The state of expecting something to happen.
2. The feeling of looking forward to something with desire or confidence.
3. The level of expectation regarding the occurrence of an event.

Origin:

Early 17th century: from latin expectantia, from expectare "await" (see expect).

Examples:

1. There was a sense of expectancy in the air before the concert.
2. The expectancy of a promotion made her work even harder.
3. She had high expectancy of winning the competition.
4. The expectancy of a new baby brought excitement and joy to the family.
5. The expectancy of a raise made the employees nervous.