simultaneously

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simultaneously

The two musicians begin playing their instruments simultaneously.

Definition

Adverb * At the same time; concurrently: Occurring, operating, or done at exactly the same instant or over the same period.

Usage

The adverb "simultaneously" is used to describe two or more actions, events, or processes that happen at the same time. It emphasizes precise temporal coincidence. * It typically modifies a verb. * It is often placed before the main verb or at the beginning/end of a clause for emphasis.

Examples
  • The two lights flashed simultaneously. (Modifying the verb "flashed")
  • She can listen to music and read a book simultaneously. (Placed at the end of the clause)
  • Simultaneously, all the alarms in the building began to sound. (Placed at the beginning for emphasis)
  • The system is designed to process multiple requests simultaneously.
Advanced Usage
  • In technical/scientific contexts: Used to describe processes or events with zero time delay between them.
    • The experiment requires the two chemicals to be mixed simultaneously.
  • "To do/be happening simultaneously": A common collocation.
    • Several important meetings are happening simultaneously, so I cannot attend them all.
Variants and Related Words
  • Simultaneous (adjective): Existing, occurring, or operating at the same time.
    • They made simultaneous announcements.
  • Simultaneity (noun): The quality or state of being simultaneous.
    • The simultaneity of the events was no coincidence.
Synonyms
  • At the same time
  • Concurrently
  • Together
  • At once
  • In unison
Antonyms
  • Separately
  • Sequentially
  • Consecutively
  • One after another
Related Phrases/Idioms
  • To happen/occur simultaneously: The standard phrase for describing coinciding events.
    • The power outage and the network failure occurred simultaneously, causing chaos.
simultaneously

The two musicians begin playing their instruments simultaneously.

Adverb
  1. at the same instant
    • they spoke simultaneously