promptprompt1 /prɒmptprɑːmpt/ adjectiveadj done quickly, immediately, or at the right timeWe guarantee prompt delivery of your purchases.
Many customers are taking advantage of a 2.5% discount for prompt payment.
—promptly adverbadvAnswer the telephone promptly — within three rings if possible.
The prices of certain goods such as agricultural produce respond very promptly to changes in supply and demand.
—promptness noun [uncountableU]BT responded with great promptness and had two telephone lines and a fax line installed within three days.