Meaning of the word "prompt"
prompt
to cause something
[verb]
Examples:
What prompted you to get a puppy?
completed in a timely manner
[adj]
Examples:
I expect a prompt reply.
a sign to act upon
[noun]
Examples:
The actor's prompt reminded him of his lines.
a time constraint
[adv]
Examples:
The meeting ended promptly at 4 o'clock.