Commercially prepared or processed for quick and easy final preparation:
Occurring at once; happening without delay:
Carried out or performed without delay:
Occurring at an unspecified time in the future:
Of or toward the end or more advanced part, as of a period or stage:
Coming afterward in time (used with than when comparing with another time).
A continuous, measurable quantity in which events occur in a sequence proceeding from the past through the present to the future.
Find another word for instantaneous. In this page you can discover 13 synonyms, antonyms, idiomatic expressions, and related words for instantaneous, like: instant, unhesitating, long-term, immediate, prompt, delayed, eventual, late, later, time and instantaneously.