Tardily
/ˈtɑːrdɪli/
Definition 1 of 1
Pro Tip 1/3Time Sensitivity
Use 'tardily' to indicate a lack of promptness that may cause inconvenience or annoyance. 
He was warned that arriving tardily would result in a docked paycheck.
Pro Tip 2/3Negative Implication
'Tardily' often carries a negative tone, suggesting irresponsibility or disrespect. 
The project was completed tardily, which frustrated the team.
Pro Tip 3/3Rare Usage
The word 'tardily' is not commonly used; 'late' is more frequent in everyday conversation. 
She noticed his habit of arriving tardily to meetings.