碌碌庸才: be of most ordinary capacity; a mediocre man; a very mediocre person; a common pers
碌碌无能: devoid of ability; a commonplace kind of man with no ability to speak of; a man of common clay with little ability; a mere mediocrity, incapable of doing things where skill or intellect is
碌碌尘寰: be toiling in the red dust of the earthly world -- busy with miscellaneous work