English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

When I was growing up, if I ever said something similar to "Can I go to the store with Joe?", my mom would correct me with "May I go to the store with Joe?".

Is "May I?" the typical way to ask a question politely or is this just specific to where I grew up or what my mom learned?

share|improve this question
up vote 24 down vote accepted

As I learned it, "may" is about permission while "can" is about ability.

  • "May we borrow your car?"
  • "Can you say 'Irish wristwatch'?"

So your mother was correcting "Do I have the ability to go to the store with Joe" to "Do I have permission to go to the store..."

share|improve this answer
Of course "can" has long been used interchangeably with "may", regardless of any such "rule". merriam-webster.com/dictionary/can – nohat Aug 5 '10 at 21:15
The interchangibility only happens on the permissive side though – burnt_hand Aug 6 '10 at 16:19
Technically, it is incorrect to say can because even if you are told not to do something, you still are able to. Just to use an easy example, if a child is told not to jump (on the bed ;), he still CAN jump, but he MAY NOT. – Arlen Beiler Aug 6 '10 at 16:29
The 'meaning' of words like can and may slides around for reasons similar to this... english.stackexchange.com/questions/21706/… – FumbleFingers May 4 '11 at 3:13

I agree these are largely interchangeable.

You can take it one step further and employ the subjunctive mood to make questions more polite. These work well if you want something of someone, rather than mere information.

  • Might I join you?
  • Could you please say this?

In the last example, though, note that could can't really be replaced with might, let alone may. Would is also appropriate.

share|improve this answer

I don't think it matters if you use "may" or "can" - both can be polite or impolite. This is because politeness has as much to do with intonation and context as with the actual words used to build the question. The relationship between the interactants is also key.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.