Cool MateIt could be vs Possibly
When to use each in English, with meaning, register, and examples.
It could be
Top 5,000 (fairly common)
Possibly
Top 2,000 (common)B1adverb
Most common: Possibly
| It could be | Possibly | |
|---|---|---|
| Pronunciation | 🇬🇧 //ɪt kʊd biː//🇺🇸 //ɪt kəd bi// | 🇬🇧 /["/ˈpɒsəbli/"]/🇺🇸 /["/ˈpɑːsəbli/"]/ |
| Meaning | This phrase means there's a possibility or uncertainty about something. | maybe or maybe not; not sure |
| Example | It could be raining tomorrow, so take an umbrella. | It could possibly rain tomorrow, so take an umbrella. |
| Register | Neutral | Neutral |
| How common | Top 5,000 (fairly common) | Top 2,000 (common) |
| CEFR level | - | B1 |
| Part of speech | adverb | |
| Collocations | it could be true, it could be worse, it could be anything, it could be possible | possibly true, possibly available, possibly dangerous |
| Antonyms | - | definitely, certainly |
| Common mistakes | Using 'it could be' for certainty instead of possibility., Confusing with 'it might be', which is similar but slightly softer., Forgetting to follow with an appropriate noun or adjective. | 'Possibly' is often confused with 'probably'—they mean different things., Learners may omit 'possibly' in sentences where it's needed., Some learners incorrectly use 'possibly' with the gerund form (e.g., 'possibly going'). |
| Usage notes | Use in predictions or suggestions. More casual than formal; avoid in strict academic writing. | Use 'possibly' when you want to express uncertainty or doubt about something. It's generally neutral, suitable for both spoken and written contexts, but avoid it in very formal writing where you might prefer words like 'potentially'. |
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Frequently asked questions: It could be vs Possibly
What's the difference between It could be and Possibly?
It could be: This phrase means there's a possibility or uncertainty about something. Possibly: maybe or maybe not; not sure
Which is more common: It could be and Possibly?
Possibly is the most common in everyday English.
Can you show an example of each?
It could be: It could be raining tomorrow, so take an umbrella. Possibly: It could possibly rain tomorrow, so take an umbrella.
Can I use It could be and Possibly interchangeably?
Not always. It could be and Possibly 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.