Is There a Difference?
'No one seemed to notice' or 'no-one seemed to notice? Are both sentences correct? Is there a difference between these two sentences?
No One vs. No-one
Consider these sentences:
'No one' is the correct spelling.
You might think because 'no body,' 'some body,' and 'some one' have been changed to 'nobody,' 'somebody,' and 'someone,' 'no one' has also become 'noone'. But 'no one' does not obey this rule. It's probably because 'noone' looks unnatural and wrong.
'No-one' with a hyphen, is also commonly used as an alternative spelling to 'no one,' except for American English in which the hyphenated 'no-one' is not considered a correct spelling.
Never write 'Noone'. It's a spelling error.