Definition

Happening or done immediately, without any delay or waiting time.

Example

The response to the emergency call was instantaneous, arriving within seconds.

Conversation

Did you hear about the new app that gives instantaneous weather updates?

Yeah, I downloaded it yesterday!

It's amazing how quickly it provides information; I love it.

Same here! It's so convenient for planning my day.

Synonyms & Antonyms

Root Explanation

Instantaneous → It is formed from "instans" (from Latin, meaning standing or existing) and the suffix "-aneous" (meaning pertaining to or characterized by). The word "instantaneous" refers to something that exists or occurs at a particular moment, without delay.

Memory Tip

Think of something that 'exists' ('instans') at a specific moment — that's why instantaneous means happening right at that moment.

Visually Confused Words