underyield
/ˌʌndɪˈrɪld/Definitions
1. verb
to produce less than expected or to be less productive than expected
“The new employee underyielded in the first quarter due to a lack of experience.”
2. noun
the act of producing less than expected
“The company’s underyield was a major concern for the investors.”
3. noun
a person or thing that produces less than expected
“The underperforming employee was a significant underyield for the team.”