1. the state of expecting or anticipating something
2. the expected duration of something, especially life
Usage: often used in ‘life expectancy’

Examples

• There was an air of expectancy in the theater before the show began.
• The children waited with great expectancy for their presents.
• Life expectancy has increased dramatically over the past century.
• The expectancy of the old building’s collapse worried the neighbors.
• Her face showed eager expectancy as she opened the letter.
• The doctor discussed the patient’s life expectancy with the family.