Simultaneously

//ˌsaɪmlˈteɪnɪəsli// adv

adv ·Uncommon ·College level

Definitions

Adverb

1
Occurring at the same time. not-comparable
"The cradle-rocking and the song would cease simultaneously for a moment, and an exclamation at highest vocal pitch would take the place of the melody."

Adverb

1
at the same instant wordnet

Synonyms

at same time all at once all together as one as one man at a blow

Antonyms

consecutive individually one at a time piecemeal

Example

"The summit talks are to be broadcast simultaneously throughout the world."

Etymology

From simultaneous + -ly.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.