Detail vs Say why

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

Detail

Top 1,000 (very common)A1noun

Say why

Beyond 10,000 (less common)
Most common: Detail
 DetailSay why
Pronunciation🇬🇧 /["/ˈdiːteɪl/"]/🇺🇸 /["/ˈdiːteɪl//dɪˈteɪl/"]/🇬🇧 //seɪ waɪ//🇺🇸 //seɪ waɪ//
MeaningA small part of something that adds to the whole.To explain the reason for something.
ExamplePlease remember to include every detail in your report.Can you say why you made that decision?
RegisterNeutralNeutral
How commonTop 1,000 (very common)Beyond 10,000 (less common)
CEFR levelA1-
Part of speechnoun
Collocationslittle, minor, minute, point, wealth, level, give, go into, offer, emerge, suggest something, reveal something, for details, in detail, over a/​the detail, attention to detail, down to the last detail, every last detail, little, minor, minute, point, wealth, level, give, go into, offer, emerge, suggest something, reveal something, for details, in detail, over a/​the detail, attention to detail, down to the last detail, every last detail, little, minor, minute, point, wealth, level, give, go into, offer, emerge, suggest something, reveal something, for details, in detail, over a/​the detail, attention to detail, down to the last detail, every last detail, little, minor, minute, point, wealth, level, give, go into, offer, emerge, suggest something, reveal something, for details, in detail, over a/​the detail, attention to detail, down to the last detail, every last detailsay why you believe, say why it matters, say why you disagree, say why you think so
Antonymsgenerality, broadness-
Common mistakesConfused with 'detailed', which is an adjective., Using 'detail' as a verb and forgetting the object., Mispronouncing it by stressing the wrong syllable.Confusing with 'tell why'; 'say' is used for direct speech., Using 'saying why' instead of 'say why'.
Usage notesUse 'detail' when discussing parts of an explanation or description. Avoid using it in very casual conversations unless discussing specifics.Use 'say why' in discussions or explanations. It's not appropriate for very formal writing.

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Say why

Frequently asked questions: Detail vs Say why

What's the difference between Detail and Say why?

Detail: A small part of something that adds to the whole. Say why: To explain the reason for something.

Which is more common: Detail and Say why?

Detail is the most common in everyday English.

Can you show an example of each?

Detail: Please remember to include every detail in your report. Say why: Can you say why you made that decision?

Can I use Detail and Say why interchangeably?

Not always. Detail and Say why 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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