ENGLISH
REFERENCE

simultaneously

adv. time
C1 Advanced Oxford US //ˌsaɪməɫˈteɪniəsɫi// UK //sˌɪməltˈeɪniəsli// si·mul·ta·ne·ous·ly

adv. at the exact same time as something else. You use this to describe two or more things happening together.

adv. happening, existing, or done at the exact same time. Often used to describe concurrent processes or events in technical or formal contexts.


SIMPLE

The two runners crossed the finish line simultaneously.

CONTEXTUAL

The software allows multiple users to edit the same document simultaneously from different locations around the world.

COMPLEX

The conductor managed to cue the brass section while simultaneously maintaining a delicate tempo with the strings, demonstrating remarkable coordination and focus.

Origin

From simultaneous + -ly.

Usage

Typically placed after the verb or at the end of the clause; can also appear between the auxiliary and main verb.

Pitfall

They arrived simultaneously to the party.They arrived at the party simultaneously.As a long adverb of time, it usually follows the entire verb phrase rather than interrupting it.

© 2026 English Reference