inefficiently
Definitions
In a way that fails to achieve maximum productivity or fails to make the best use of time and resources.
In a manner that is wasteful or lacking in competence.
Examples
The old factory equipment was operating inefficiently, causing significant delays in production.
He managed his time inefficiently, which resulted in him missing the project deadline.
Synonyms
wastefully unproductively incompetently disorganizedly slapdash ineffectually
Antonyms
efficiently productively competently effectively systematically skillfully