immediately vs instantaneously

Both 'immediately' and 'instantaneously' are correct adverbs that convey the idea of something happening without delay. However, 'immediately' is more commonly used in everyday language, while 'instantaneously' is less common and may sound more formal or technical.

Last updated: March 26, 2024 • 1138 views

This is a correct and commonly used adverb in English.

"immediately"

It is used to describe something happening without delay or instantly.

Examples:

Please call me immediately.
He responded immediately to the emergency.

Show examples from the web [+]

5 days ago ... Kids Definition of immediately ... 1 : with nothing between Their house is immediately behind mine. 2 : right away Come here immediately!
7 days ago ... immediately adverb (NOW) ... now or without waiting or thinking: The plane began to turn to the left almost immediately after takeoff.
immediately · without lapse of time; without delay; instantly; at once: Please telephone him immediately. · with no object or space intervening. · closely: ...
synonyms for immediately · directly · forthwith · instantly · promptly · rapidly · shortly · soon · urgently ...
Mar 16, 2022 ... You can get an EIN immediately by applying online. International applicants must call 267-941-1099 (Not a toll-free number).
directly after, immediately after, right after, etc.
Mar 23, 2020 ... ... Order GA 09 issued by Gov. Greg Abbott, they must postpone all surgeries and procedures that are not immediately medically necessary.
Immediately can be used in the following ways: as an adverb (with a verb): I immediately recognized his voice. (followed by a preposition or another adverb): ...
To assess the dynamics of autonomic nervous activity during and immediately after exercise, we determined the power spectrum of heart rate and respiratory ...

Alternatives:

right away
at once
instantly
promptly
straightaway

This is a correct adverb in English, but it is less commonly used in everyday language.

"instantaneously"

It is used to describe something happening without any delay, instantly, or at the same time.

Examples:

The information was transmitted instantaneously.
The effect of the medicine was felt instantaneously.

Show examples from the web [+]

Explosions are the result of chemical reactions happening almost instantaneously.
It creates a gateway to jump instantaneously from one point to another light years away.
Bone and bullet fragments ricocheted through his heart, proving fatal almost instantaneously.
You're instantaneously susceptible to any suggestion.
Exposed skin might actually create frostbite instantaneously.
stunned before slaughter or killed instantaneously in accordance with the provisions of Annex C;
It means they can subtly and instantaneously influence each other across space.
A particle can disappear on one side of the barrier and instantaneously reappear on the other.
It was transmitted instantaneously from source to eye.
It can move other objects... instantaneously across a distance...
The device would instantaneously cause the Genesis effect.
A murder weapon that can fire two rounds near instantaneously without any recoil.
Territorial boundaries are becoming practically meaningless as enormous amounts of information are spreading throughout the world almost instantaneously.
That three-dimensional molecular structures can be transmitted instantaneously through space, much in the same way as a television image is.
We would have no idea what our cosmic history was... if the speed of light traveled instantaneously.
The Committee concluded that to be considered humane a killing trap should render an animal insensible to pain instantaneously, or at least within a few seconds.
Here I am in Grosvenor Square, and he's miles away yet, we're able to speak to each other instantaneously.
If you then make a measurement of one of the particles, then that instantaneously determines what the behavior of the other particle should be.
That's weird, because it may suggest that information has traveled instantaneously, faster than the speed of light, from one particle to another.
But I think what's new is that we now have the capacity to communicate instantaneously across frontiers right across the world.

Alternatives:

immediately
right away
at once
promptly
straightaway

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immediately vs instantaneously

"immediately"

"instantaneously"

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