1) Anon 2) At once 3) Fast 4) Immediately 5) Now 6) Oncue 7) On the dot 8) On time 9) Pdq 10) Pronto 11) Quickly 12) Readily 13) Right now 14) Soon 1) At once 2) Done right away, immediately 3) In a punctual manner 4) In good time 5) On the dot 6) On time 7) Quick 8) Quickly 9) With little or no delay 10) Without delay or hesitation 
• (adv.) In a prompt manner.
Prompt'ly adverb In a prompt manner. 
[adv] - with little or no delay 2. [adv] - at once (usually modifies an undesirable occurrence) 3. [adv] - in a punctual manner
adverb with little or no delay; `the rescue squad arrived promptly`; `come here, quick!`readily 1 pronto adverb in a punctual manner; `he did his homework promptly`