Cool MateAct fast vs Think quick
When to use each in English, with meaning, register, and examples.
Act fast
Beyond 10,000 (less common)
Think quick
InformalTop 5,000 (fairly common)
Most formal: Act fastMost common: Think quick
| Act fast | Think quick | |
|---|---|---|
| Pronunciation | 🇬🇧 //ækt fæst//🇺🇸 //ækt fæst// | 🇬🇧 //θɪŋk kwɪk//🇺🇸 //θɪŋk kwɪk// |
| Meaning | Do something quickly. | Make a fast decision or response. |
| Example | If you want to win the game, you need to act fast! | In a game of charades, you have to think quick to guess the word. |
| Register | Neutral | Informal |
| How common | Beyond 10,000 (less common) | Top 5,000 (fairly common) |
| Collocations | act fast in an emergency, act fast to secure a deal, act fast while the offer lasts | think quick on your feet, think quick under pressure, need to think quick, ask to think quick, tell someone to think quick |
| Common mistakes | Using 'act fast' in a formal context., Confusing 'act fast' with 'act quickly', which has the same meaning but sounds different., Not understanding it implies urgency. | Confused with 'think carefully' - Quick means fast, opposite of careful., Used in formal contexts - It's an informal expression., Omitting the word 'quick' - The full phrase is 'think quick'. |
| Usage notes | Use 'act fast' when you need someone to respond quickly. It's appropriate in many situations, but can sound urgent. | Used in casual conversations, often when someone needs to respond or act quickly. Not suitable for formal situations. |
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Frequently asked questions: Act fast vs Think quick
What's the difference between Act fast and Think quick?
Act fast: Do something quickly. Think quick: Make a fast decision or response.
Which is more formal: Act fast and Think quick?
Act fast is the most formal of these.
Which is more common: Act fast and Think quick?
Think quick is the most common in everyday English.
Can you show an example of each?
Act fast: If you want to win the game, you need to act fast! Think quick: In a game of charades, you have to think quick to guess the word.
Can I use Act fast and Think quick interchangeably?
Not always. Act fast and Think quick 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.