Cool MateAt the same time vs Simultaneously
When to use each in English, with meaning, register, and examples.
At the same time
Top 2,000 (common)
Simultaneously
Top 2,000 (common)C1adverb
| At the same time | Simultaneously | |
|---|---|---|
| Pronunciation | 🇬🇧 //æt ðə seɪm taɪm//🇺🇸 //æt ðə seɪm taɪm// | 🇬🇧 /["/ˌsɪmlˈteɪniəsli/"]/🇺🇸 /["/ˌsaɪmlˈteɪniəsli/"]/ |
| Meaning | Occurring simultaneously or together. | At the same time as something else. |
| Example | They left the house at the same time. | The game will be broadcast simultaneously on TV and radio. |
| Register | Neutral | Neutral |
| How common | Top 2,000 (common) | Top 2,000 (common) |
| CEFR level | - | C1 |
| Part of speech | adverb | |
| Collocations | do two things at the same time, speak at the same time, work at the same time, occur at the same time, feel at the same time | happen simultaneously, simultaneously occur, perform simultaneously |
| Antonyms | - | sequentially, consecutively, successively |
| Common mistakes | Confusing 'at the same time' with 'at the same moment'., Using it with only one subject., Placing it incorrectly in the sentence. | Using it incorrectly to mean 'separately'., Confusing it with 'simultaneous' which is an adjective., Misplacing it in a sentence which can alter the meaning. |
| Usage notes | Use when describing events happening together. Avoid in very formal contexts; more suitable for everyday conversations. | Use 'simultaneously' to describe two or more actions happening at the same time. It works well in both spoken and written contexts but may sound overly formal in casual conversation. |
Frequently asked questions: At the same time vs Simultaneously
What's the difference between At the same time and Simultaneously?
At the same time: Occurring simultaneously or together. Simultaneously: At the same time as something else.
Can you show an example of each?
At the same time: They left the house at the same time. Simultaneously: The game will be broadcast simultaneously on TV and radio.
Can I use At the same time and Simultaneously interchangeably?
Not always. At the same time and Simultaneously are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.