やく不足 ぶそく
yakubusoku

Noun
na-Adjective

1. dissatisfaction with the work (role) given to one; feeling oneself above the given work (role)

Noun
na-Adjective

2. not up to the task; (being) out of one's depth

Colloquial
Related to 力不足【ちからぶそく】
Other forms: