To accelerate the progress of.
To perform (a task) fast and efficiently.
To perform the duties of an expediter.
Expeditious; quick; prompt.
Free of impediment; unimpeded.
To keep delaying; to continue to hinder; to prevent from progressing.
To put off; to postpone.
To decelerate; to slow down.
Retardation; delay.
A slowing down of the tempo; a ritardando.
A person or being who is extremely stupid or slow to learn.