tardily
Definitions
In a manner that is late or behind schedule.
With a lack of promptness or speed.
Examples
The project was submitted tardily, resulting in a significant deduction of points.
He arrived tardily to the meeting, missing the opening remarks from the director.
Synonyms
slowly belatedly sluggishly behind schedule leisurely unpunctually
Antonyms
promptly early punctually quickly ahead of time expeditiously