Cool MateAsk vs Inquire vs Probe vs Question vs What how why
When to use each in English, with meaning, register, and examples.
Ask
Top 1,000 (very common)A1verb
Inquire
FormalBeyond 10,000 (less common)B1verb
Probe
Top 2,000 (common)C1noun
Question
Top 1,000 (very common)A1noun
What how why
Top 2,000 (common)
Most formal: Inquire
| Ask | Inquire | Probe | Question | What how why | |
|---|---|---|---|---|---|
| Pronunciation | 🇬🇧 /["/ɑːsk/","/ɑːsks/","/ɑːskt/","/ˈɑːskɪŋ/"]/🇺🇸 /["/æsk/","/æsks/","/æskt/","/ˈæskɪŋ/"]/ | 🇬🇧 /["/ɪnˈkwaɪə(r)/"]/🇺🇸 /["/ɪnˈkwaɪər/"]/ | 🇬🇧 //prəʊb//🇺🇸 //proʊb// | 🇬🇧 /["/ˈkwestʃən/"]/🇺🇸 /["/ˈkwestʃən/"]/ | 🇬🇧 //wɒt haʊ waɪ//🇺🇸 //wɑt haʊ waɪ// |
| Meaning | To say you want to know something or want something from someone. | to ask about something | A tool to investigate or explore something deeply. | A sentence or phrase that asks for information. | Questions that ask for information. |
| Example | I want to ask you a question about your homework. | I called the school to inquire about the application process. | The scientists sent a probe to study the surface of Mars. | The teacher asked a difficult question during the exam. | Can you tell me what how why you chose this topic? |
| Register | Neutral | Formal | Neutral | Neutral | Neutral |
| How common | Top 1,000 (very common) | Beyond 10,000 (less common) | Top 2,000 (common) | Top 1,000 (very common) | Top 2,000 (common) |
| CEFR level | A1 | B1 | C1 | A1 | - |
| Part of speech | verb | verb | noun | noun | |
| Collocations | gently, quietly, softly, want to, dare (to), forget to, about, get asked something, if you don’t mind me asking, if you don’t mind my asking, nicely, specifically, for, nicely, specifically, for, nicely, specifically, for | inquire about, inquire into, inquire if, inquire regarding, inquire as to | space probe, medical probe, investigative probe, deep probe | awkward, difficult, embarrassing, ask (somebody), have, address, question about, question as to, question concerning to, awkward, difficult, embarrassing, ask (somebody), have, address, question about, question as to, question concerning to, burning, challenging, controversial, bring up, pose, raise, arise, go unanswered, remain unanswered, question about, question for, question of, come into, call into, be open to, beyond question, in question, without question | ask what how why, discuss what how why, explore what how why |
| Antonyms | refuse, deny, ignore | ignore, disregard, ignore | ignore, avoid | answer, solution | - |
| Common mistakes | 'Ask for' vs 'ask to': Confusing when to use 'for' versus 'to'., Overusing: Using 'ask' too frequently in a conversation can sound repetitive., Omitting the object: Forgetting to specify what you're asking for or about. | Using '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'). | Confused with 'probe' as a verb instead of a noun., Used too generically; may not be appropriate in informal contexts. | Confusing 'question' with 'query' in formal contexts., Using 'questions' as a singular noun, e.g., 'I have a question' instead of 'I have questions.' | Using 'what how why' as a statement instead of a question., Not using appropriate punctuation for questions. |
| Usage notes | Use 'ask' when requesting information or help. It's suitable for most situations but can be too direct in formal contexts. Be mindful of politeness. | Use '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. | Used in scientific and technical contexts, as well as metaphorically in discussions about examining issues. Not commonly used in casual conversation. | Use 'question' in both formal and informal settings. It's appropriate in classrooms, interviews, and casual conversations. Avoid using in situations where a statement is expected. | Use when seeking clarification or more details. Suitable in both formal and informal contexts. |
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Frequently asked questions: Ask vs Inquire vs Probe vs Question vs What how why
What's the difference between Ask, Inquire, Probe, Question, and What how why?
Ask: To say you want to know something or want something from someone. Inquire: to ask about something Probe: A tool to investigate or explore something deeply. Question: A sentence or phrase that asks for information. What how why: Questions that ask for information.
Which is more formal: Ask, Inquire, Probe, Question, and What how why?
Inquire is the most formal of these.
Which is more advanced: Ask, Inquire, Probe, Question, and What how why?
Probe is the highest level, at C1, on the CEFR scale.
Can you show an example of each?
Ask: I want to ask you a question about your homework. Inquire: I called the school to inquire about the application process. Probe: The scientists sent a probe to study the surface of Mars. Question: The teacher asked a difficult question during the exam. What how why: Can you tell me what how why you chose this topic?
Can I use Ask, Inquire, Probe, Question, and What how why interchangeably?
Not always. Ask, Inquire, Probe, Question, 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.