Insignificant vs Irrelevant
When to use each in English, with meaning, register, and examples.
Insignificant
Top 5,000 (fairly common)
Irrelevant
Top 2,000 (common)C1adjective
Most common: Irrelevant
| Insignificant | Irrelevant | |
|---|---|---|
| Pronunciation | 🇬🇧 //ɪnˈsɪɡ.nɪ.fɪ.kənt//🇺🇸 //ɪnˈsɪɡ.nɪ.fɪ.kənt// | 🇬🇧 /["/ɪˈreləvənt/"]/🇺🇸 /["/ɪˈreləvənt/"]/ |
| Meaning | Not important or of little value. | not important or related to something |
| Example | The issue at hand is quite insignificant compared to our other priorities. | His comment was irrelevant to the main topic of discussion. |
| Register | Neutral | Neutral |
| How common | Top 5,000 (fairly common) | Top 2,000 (common) |
| CEFR level | - | C1 |
| Part of speech | adjective | |
| Collocations | insignificant difference, insignificant amount, insignificant issue, insignificant detail, insignificant role | appear, be, seem, completely, entirely, quite, to |
| Antonyms | significant, important, meaningful | relevant, pertinent, applicable |
| Common mistakes | Confused with 'significant', leading to opposite meanings., Used without a noun when it needs context., Overusing it in formal writing where simpler words might be clearer. | Confused with 'relevant' - using it in the wrong context., Using as a noun when it's an adjective., Mispronouncing it (often simplified to 'ir-relevant'). |
| Usage notes | Use 'insignificant' to describe something that lacks importance. It's best for neutral contexts. Avoid using it in formal or overly casual speech. | Use 'irrelevant' in academic or formal contexts when discussing information that does not relate to the main topic. Avoid using it in casual conversations. |
See it in real clips
Frequently asked questions: Insignificant vs Irrelevant
What's the difference between Insignificant and Irrelevant?
Insignificant: Not important or of little value. Irrelevant: not important or related to something
Which is more common: Insignificant and Irrelevant?
Irrelevant is the most common in everyday English.
Can you show an example of each?
Insignificant: The issue at hand is quite insignificant compared to our other priorities. Irrelevant: His comment was irrelevant to the main topic of discussion.
Can I use Insignificant and Irrelevant interchangeably?
Not always. Insignificant and Irrelevant 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.