Longman Dictionary of Contemporary English homepage

prompt

3 adverb
     
prompt3 British English informal
at the time mentioned and no later [= sharp American English]
The bus will leave at 8 o'clock prompt.
WORD FOCUS: fast WORD FOCUS: fast
moving very quickly: at high speed, like lightning, at top speed, flat out
doing something quickly: quick, rapid, swift, prompt, speedy
happening quickly: rapid, speedy, meteoric, at an alarming rate, in no time

➔ See also fast
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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