unproductively
Definitions
In a manner that fails to produce a significant or desired result.
Without yielding useful or profitable outcomes.
Examples
The team spent the entire afternoon arguing unproductively about minor details.
He realized he had been working unproductively for hours because he was too tired to focus.
The meeting dragged on, with everyone contributing unproductively to the discussion.
Synonyms
inefficiently fruitlessly uselessly idly vainly ineffectually barrenly
Antonyms
productively efficiently effectively fruitfully usefully profitably constructively