Words / C1

siml-TAYN-ee-uh-slee/ˌsɪmlˈteɪniəsli/

Simultaneously means at the same moment: published simultaneously, happen simultaneously. Simultaneous is the adjective. At the same time is everyday; concurrent is a close formal cousin. Sequential (this batch) is one after another. Do not use it for “in the same year” if the days differ and the point is exact timing.

Meaning

At exactly the same time.

Examples

• “The two labs published simultaneously, which confused the press.”
• “The embargo broke when two sites posted simultaneously.”
• “Simultaneous interpretation is the adjective; simultaneously is how the two booths work.”

Good to know

At the same moment. Adjective: simultaneous. Everyday: at the same time. Contrast: sequential. Formal cousin: concurrent.

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