Cool MateAs fast as I could vs As quickly as possible
When to use each in English, with meaning, register, and examples.
As fast as I could
Top 2,000 (common)
As quickly as possible
Top 2,000 (common)
| As fast as I could | As quickly as possible | |
|---|---|---|
| Pronunciation | 🇬🇧 //æz fæst əz aɪ kʊd//🇺🇸 //æz fæst əz aɪ kʊd// | 🇬🇧 //əz ˈkwɪkli əz ˈpɒsəbl//🇺🇸 //əz ˈkwɪkli əz ˈpɑsəbl// |
| Meaning | As quickly as I was able to. | Do something as fast as you can. |
| Example | I ran to the bus station as fast as I could. | Please finish the report as quickly as possible. |
| Register | Neutral | Neutral |
| How common | Top 2,000 (common) | Top 2,000 (common) |
| Collocations | run as fast as I could, do it as fast as I could, move as fast as I could, finish as fast as I could | act as quickly as possible, respond as quickly as possible, complete as quickly as possible |
| Common mistakes | Omitting 'as' - learners sometimes say 'fast I could'., Using 'as fast as' without 'I could' - learners might shorten it incorrectly., Confusing with 'as quickly as I could', which is also correct but has a slightly different tone. | Saying 'as quick as possible' instead of 'as quickly as possible'., Using it in overly casual settings, where a simpler phrase may be better., Misplacing it in the sentence's structure, confusing the flow. |
| Usage notes | Used to describe doing something with maximum speed. Appropriate in both spoken and written English, but may be less formal in writing. | Use this phrase in both spoken and written English when emphasizing urgency. It's appropriate in most contexts but can sound slightly formal in casual conversations. |
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Frequently asked questions: As fast as I could vs As quickly as possible
What's the difference between As fast as I could and As quickly as possible?
As fast as I could: As quickly as I was able to. As quickly as possible: Do something as fast as you can.
Can you show an example of each?
As fast as I could: I ran to the bus station as fast as I could. As quickly as possible: Please finish the report as quickly as possible.
Can I use As fast as I could and As quickly as possible interchangeably?
Not always. As fast as I could and As quickly as possible 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.