Cool MateBut most of all vs Mainly vs Primarily
When to use each in English, with meaning, register, and examples.
But most of all
Mainly
Primarily
| But most of all | Mainly | Primarily | |
|---|---|---|---|
| Pronunciation | 🇬🇧 //bʌt məʊst əv ɔːl//🇺🇸 //bʌt moʊst əv ɔl// | 🇬🇧 /["/ˈmeɪnli/"]/🇺🇸 /["/ˈmeɪnli/"]/ | 🇬🇧 /["/praɪˈmerəli//ˈpraɪmərəli/"]/🇺🇸 /["/praɪˈmerəli/"]/ |
| Meaning | Used to emphasize something very important. | mostly or for the most part | mainly; for the most part |
| Example | I love traveling, but most of all, I enjoy meeting new people. | She mainly works from home to achieve a better work-life balance. | a course designed primarily for specialists |
| Register | Neutral | Neutral | Neutral |
| How common | Top 2,000 (common) | Top 2,000 (common) | Top 2,000 (common) |
| CEFR level | - | B1 | B2 |
| Part of speech | adverb | adverb | |
| Collocations | but most of all, I think, but most of all, it's clear, but most of all, we should | mainly for, mainly because, mainly concerned, mainly composed, mainly focused | primarily concerned, primarily focused, primarily used, primarily for, primarily about |
| Antonyms | - | rarely, seldom, occasionally | secondarily, incidentally, subordinately |
| Common mistakes | Using it as a complete sentence without context., Confusing with 'but above all', which has a similar but slightly different emphasis. | Using 'mainly' instead of 'main' as an adjective, Confusing 'mainly' with 'mainly' as a conjunction, Placing 'mainly' at the beginning of the sentence incorrectly | Confused with 'principally' which has a similar meaning but different usage., Using it in a negative context incorrectly, such as saying 'not primarily' when 'not mainly' is clearer., Incorrectly placing 'primarily' at the end of a sentence. |
| Usage notes | Typically used in conversations or informal writing to highlight a key point. Avoid in very formal contexts. | Use 'mainly' in sentences to indicate the primary focus or majority aspect. It fits well in formal and informal contexts but avoid it in casual speech where shorter alternatives may suffice. | Use 'primarily' when you want to focus on the main reason or purpose; it's suitable in both spoken and written English but is more common in formal contexts than casual conversation. |
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Frequently asked questions: But most of all vs Mainly vs Primarily
What's the difference between But most of all, Mainly, and Primarily?
But most of all: Used to emphasize something very important. Mainly: mostly or for the most part Primarily: mainly; for the most part
Which is more advanced: But most of all, Mainly, and Primarily?
Primarily is the highest level, at B2, on the CEFR scale.
Can you show an example of each?
But most of all: I love traveling, but most of all, I enjoy meeting new people. Mainly: She mainly works from home to achieve a better work-life balance. Primarily: a course designed primarily for specialists
Can I use But most of all, Mainly, and Primarily interchangeably?
Not always. But most of all, Mainly, and Primarily 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.