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Simultaneously: Definition, Usage & Common Mistakes
Meaning 1：at the same time (simultaneously)
simultaneously
/saɪməlˈteɪniəsli/
ad.
happening or done at exactly the same moment.
at the same time
➕
/æt ðə seɪm taɪm/
ad.
Describes two or more events, actions, or processes occurring with exact temporal coincidence.
📘 Details & Usage
📖 Root Explanation
From Latin simul (together, at the same time) + taneus (time) + -ly (adverb-forming suffix).
💡 Mnemonic
SING a MELODY & TELL a TALE UNIQUELY, yet SIMULTANEOUSLY. Imagine two singers performing different songs at the same moment.
📖 Example
In modern life, you often need to cook dinner simultaneously while watching a tutorial video on your phone.
In modern life, you often need to cook dinner at the same time as watching a tutorial video on your phone.
🔗 Collocations
occur simultaneously – to happen at exactly the same time
work simultaneously – to operate or function at the same time
broadcast simultaneously – to transmit a program on multiple channels or stations at the same time
🔄 Synonyms
concurrently (ad.) – Overlapping in time, often used in formal or technical contexts like computing.
at once (ad.) – A more common, less formal phrase meaning at the same time.
together (ad.) – In or into one group, mixture, or place at the same time; can imply association as well as timing.
🚫 Antonyms
separately (ad.) – Individually, one after another, or at different times.
sequentially (ad.) – In a sequence, one following the other in order.
🌱 Derivatives
simultaneity (n.) – The quality or fact of happening at the same time.
simultaneous (adj.) – Occurring, operating, or done at the same time.
📖 Cultural Story
Derived from the Medieval Latin word 'simultaneus'. This term entered English in the 17th century, primarily used in scientific and philosophical contexts to describe events occurring with precise temporal coincidence. It reflects a key concept in physics, computing (parallel processing), and event planning.
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