To intentionally stall, to delay, to obstruct.
To procrastinate, put off; to dawdle, avoid, or make progress slowly and reluctantly.
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.