Part of speech:
Prompt is defined as something that is done on time or right away or someone who does things on time or immediately.
Occurring, developing, or appearing before the expected or usual time:
(Biology) Able to survive and produce viable offspring in a particular environment
Find another word for timeliest. In this page you can discover 4 synonyms, antonyms, idiomatic expressions, and related words for timeliest, like: promptest, luckiest, earliest and fittest.