Dictionary definition · instant
noun
- a very short time (as the time it takes the eye to blink or the heart to beat)"if I had the chance, I'd do it in a flash"
- a particular point in time"the moment he arrived the party began"
adjective
- occurring with no delay"relief was instantaneous"
- in or of the present month"your letter of the 10th inst"
- demanding attention"clamant needs"
Similar words
Source: Open English WordNet (CC BY 4.0).