English Reference

Word

instantaneously

Phoneticsin·stan·ta·neous·ly

US/ˌɪnstənˈtæniəsɫi/

UK/ˌɪnstɑːntˈeɪniəsli/

Definition

adv. happening or happening at the same time as something else. It describes something that happens so fast that you cannot see it take place.

adv. occurring or happening at the same time as another event; without any delay. Often used to describe physical or mechanical responses that are immediate.

Examples

“The light turned on instantaneously when I flipped the switch.”

“The computer processes the data instantaneously, allowing the user to see the results of their calculations in real time.”

“In physics, the theory suggests that information can travel instantaneously across vast distances, though this remains a subject of intense debate among modern researchers.”

Examples

simple

“The light turned on instantaneously when I flipped the switch.”

contextual

“The computer processes the data instantaneously, allowing the user to see the results of their calculations in real time.”

complex

“In physics, the theory suggests that information can travel instantaneously across vast distances, though this remains a subject of intense debate among modern researchers.”

Real-World Examples

“Today, Bodegas says customers are demanding more advanced capabilities, such as seamless backup, meaning the switch from grid to backup occurs instantaneously and without any noticeable interruption.”
BBC News · 25 Aug 2026
“After handing over £1,200 for a private online assessment, he triumphantly reported that he had (almost instantaneously) been diagnosed with ADHD.”
The Guardian · 20 Aug 2026

Etymology

From instantaneous + -ly.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

This entry

Level
C1 · Advanced
Frequency
Occasional
Updated

Scan code

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English Reference