adjective
dilatory
DIL-uh-tor-ee/ˈdɪlətɔːri/
Slow to act or tending to cause delay.
The dilatory checkout worker checks his phone while customers wait with their groceries.

Etymology
The elements meaning “carry away” underlie a verb meaning “put off” or “postpone.” Dilatory describes someone prone to that postponement, or something that causes delay.
In context
the second sentence was added providing the presumption that any motion for postponement is dilatory except for the grounds stated therein.
More examples
- Opponents use dilatory tactics to postpone the vote.
- Customers who are dilatory in paying their bills face late fees.
- A dilatory approval process keeps the new clinic from opening.
Forms
dilatory
dilatoriness noun — Slowness in acting or a tendency to delay.