Cool MateCertain vs Confident vs Convinced vs Positive vs You are sure of this
When to use each in English, with meaning, register, and examples.
Certain
Confident
Convinced
Positive
You are sure of this
| Certain | Confident | Convinced | Positive | You are sure of this | |
|---|---|---|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈsɜːtn/"]/🇺🇸 /["/ˈsɜːrtn/"]/ | 🇬🇧 //ˈkɒn.fɪ.dənt//🇺🇸 //ˈkɑːn.fɪ.dənt// | 🇬🇧 /["/kənˈvɪnst/"]/🇺🇸 /["/kənˈvɪnst/"]/ | 🇬🇧 /["/ˈpɒzətɪv/"]/🇺🇸 /["/ˈpɑːzətɪv/"]/ | 🇬🇧 //jʊ ɑːr ʃʊə ɒv ðɪs//🇺🇸 //ju ɑr ʃʊr ʌv ðɪs// |
| Meaning | sure, without any doubt | Feeling sure about yourself and your abilities. | To believe strongly that something is true or correct. | Having a good attitude or a good feeling about something. | You believe this with confidence. |
| Example | I am certain that I locked the door before leaving. | She was confident during her presentation. | She was convinced that she could win the competition. | She has a positive attitude that inspires everyone around her. | You are sure of this because you have seen the evidence. |
| Register | Neutral | Neutral | Neutral | Neutral | Neutral |
| How common | Top 1,000 (very common) | Top 1,000 (very common) | Top 2,000 (common) | Top 1,000 (very common) | Top 5,000 (fairly common) |
| CEFR level | A2 | B1 | B2 | A1 | - |
| Part of speech | adjective | adjective | adjective | adjective | |
| Collocations | be, feel, look, very, absolutely, quite, about, of, can’t say for certain, not know for certain, be, feel, look, very, absolutely, quite, about, of, can’t say for certain, not know for certain | confident attitude, confident speaker, confident approach, confident smile | appear, be, feel, absolutely, completely, fully, of | appear, be, feel, extremely, fairly, very, about, be, prove, test, strongly, weakly, for, be, seem, sound, absolutely, quite, fairly, about, of | be sure of something, make sure of this, not sure of this, feel sure of this, are you sure of this |
| Antonyms | uncertain, doubtful, indefinite | insecure, doubtful, unsure | unconvinced, doubtful, skeptical | negative, pessimistic | - |
| Common mistakes | Confused with 'sure' in different contexts., Using 'certain' without clarifying what is certain about., Incorrectly using 'certain' to describe someone as a person (should be used for objects or ideas). | Confusing with 'confidence' which is the noun form., Using 'confident' to describe objects instead of people., Confusing 'confident' with 'arrogant', which has a negative connotation. | Using 'convince' instead of 'convinced' as an adjective., Confusing 'convinced' with 'persuaded' when only one person believes., Omitting the object when using 'convinced'. | Confused with 'positive' vs 'negative'., Using 'positively' in place of 'positive' incorrectly., Mispronouncing 'positive' without the correct emphasis. | Confusing with 'You are sure about this'., Using 'of' instead of 'about' incorrectly., Saying 'You sure of this?' instead of 'Are you sure of this?' |
| Usage notes | Use 'certain' when you want to express confidence in something. It's appropriate in both spoken and written English, but avoid it in very formal contexts where 'specific' or 'determined' may be better. | Use 'confident' to describe someone who believes in their skills. Generally appropriate in both formal and informal contexts. | Use 'convinced' in both formal and informal contexts. It's often followed by 'that' when expressing what someone believes ('convinced that...'). Avoid using in overly casual contexts where slang is preferred. | Use 'positive' to describe feelings, thoughts, or results. It's appropriate in most contexts, but avoid in very technical discussions where precision is key. | Used in conversations where someone seeks confirmation. Suitable for both written and spoken contexts. Can be informal in casual discussions. |
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Frequently asked questions: Certain vs Confident vs Convinced vs Positive vs You are sure of this
What's the difference between Certain, Confident, Convinced, Positive, and You are sure of this?
Certain: sure, without any doubt Confident: Feeling sure about yourself and your abilities. Convinced: To believe strongly that something is true or correct. Positive: Having a good attitude or a good feeling about something. You are sure of this: You believe this with confidence.
Which is more advanced: Certain, Confident, Convinced, Positive, and You are sure of this?
Convinced is the highest level, at B2, on the CEFR scale.
Can you show an example of each?
Certain: I am certain that I locked the door before leaving. Confident: She was confident during her presentation. Convinced: She was convinced that she could win the competition. Positive: She has a positive attitude that inspires everyone around her. You are sure of this: You are sure of this because you have seen the evidence.
Can I use Certain, Confident, Convinced, Positive, and You are sure of this interchangeably?
Not always. Certain, Confident, Convinced, Positive, and You are sure of this 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.