adverb

simultaneously

simultaneously

The two guns fired simultaneously.

The two guns fired simultaneously.

She was laughing and crying simultaneously.

She was laughing and crying simultaneously.

((modifies a verb)) at the same time The two guns fired simultaneously.

Synonyms: concurrently, at the same time; Antonyms: separately, sequentially

The adverb form of 'simultaneous'. From Latin `simul` ('at the same time').

The '-ly' ending tells you it's an adverb, describing 'how' an action is done (at the same time).

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