Inquire vs What how why

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

Inquire

FormalBeyond 10,000 (less common)B1verb

What how why

Top 2,000 (common)
Most formal: InquireMost common: What how why
 InquireWhat how why
Pronunciation🇬🇧 /["/ɪnˈkwaɪə(r)/"]/🇺🇸 /["/ɪnˈkwaɪər/"]/🇬🇧 //wɒt haʊ waɪ//🇺🇸 //wɑt haʊ waɪ//
Meaningto ask about somethingQuestions that ask for information.
ExampleI called the school to inquire about the application process.Can you tell me what how why you chose this topic?
RegisterFormalNeutral
How commonBeyond 10,000 (less common)Top 2,000 (common)
CEFR levelB1-
Part of speechverb
Collocationsinquire about, inquire into, inquire if, inquire regarding, inquire as toask what how why, discuss what how why, explore what how why
Antonymsignore, disregard, ignore-
Common mistakesUsing 'inquire' instead of 'require'., Confusing 'inquire' with 'enquire' (especially in British English)., Using 'inquire' without a specific subject (e.g., 'I want to inquire the details' instead of 'I want to inquire about the details').Using 'what how why' as a statement instead of a question., Not using appropriate punctuation for questions.
Usage notesUse 'inquire' in formal contexts, such as business or official situations. It's less common in everyday conversation, where 'ask' is preferred. Avoid using it in informal settings.Use when seeking clarification or more details. Suitable in both formal and informal contexts.

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What how why

Frequently asked questions: Inquire vs What how why

What's the difference between Inquire and What how why?

Inquire: to ask about something What how why: Questions that ask for information.

Which is more formal: Inquire and What how why?

Inquire is the most formal of these.

Which is more common: Inquire and What how why?

What how why is the most common in everyday English.

Can you show an example of each?

Inquire: I called the school to inquire about the application process. What how why: Can you tell me what how why you chose this topic?

Can I use Inquire and What how why interchangeably?

Not always. Inquire and What how 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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