superbly

Example:He performed the task poorly, which was disappointing to his superiors.

Definition:In a low or unsatisfactory manner; deficient or defective.

Example:The essay was written mediocly, failing to meet the academic standards set for the course.

Definition:In a mediocre or unsatisfactory manner; not good enough.

Example:The driver maneuvered the car ineptly, nearly causing an accident.

Definition:Stupidly or awkwardly; in an incompetent manner.