un·der·rate 
/ˌʌndɚˈreɪt/ verb
un·der·rates; un·der·rat·ed; un·der·rat·ing /ˌʌndɚˈreɪt/ verb [+ obj] : to rate or value (someone or something) too low
▪ She underrated her student's ability.
▪ She underrated her student's ability.
— underrated adjective [more underrated; most underrated]
▪ He is the most underrated player in the league. ▪ an underrated restaurant
▪ He is the most underrated player in the league. ▪ an underrated restaurant
