But most of all vs Mainly

When to use each in English, with meaning, register, and examples.

But most of all

Top 2,000 (common)

Mainly

Top 2,000 (common)B1adverb
 But most of allMainly
Pronunciation🇬🇧 //bʌt məʊst əv ɔːl//🇺🇸 //bʌt moʊst əv ɔl//🇬🇧 /["/ˈmeɪnli/"]/🇺🇸 /["/ˈmeɪnli/"]/
MeaningUsed to emphasize something very important.mostly or for the most part
ExampleI love traveling, but most of all, I enjoy meeting new people.She mainly works from home to achieve a better work-life balance.
RegisterNeutralNeutral
How commonTop 2,000 (common)Top 2,000 (common)
CEFR level-B1
Part of speechadverb
Collocationsbut most of all, I think, but most of all, it's clear, but most of all, we shouldmainly for, mainly because, mainly concerned, mainly composed, mainly focused
Antonyms-rarely, seldom, occasionally
Common mistakesUsing 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
Usage notesTypically 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.

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But most of all
Mainly

Frequently asked questions: But most of all vs Mainly

What's the difference between But most of all and Mainly?

But most of all: Used to emphasize something very important. Mainly: mostly or for the most part

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.

Can I use But most of all and Mainly interchangeably?

Not always. But most of all and Mainly 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.

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