ineptly
Definitions
In a manner that lacks skill, aptitude, or competence.
In a clumsy, awkward, or unsuitable way.
Examples
The new manager handled the crisis ineptly, causing further confusion among the staff.
He attempted to fix the leaking pipe, but he performed the task so ineptly that the kitchen flooded.
Synonyms
clumsily awkwardly incompetently bunglingly unskillfully maladroitly inefficiently
Antonyms
skillfully competently adeptly efficiently expertly capably proficiently