English (language): What is the most misspelt word in the English language?
1."may be" and "maybe" are different.
may be just means might be, a verb phrase.
ex: I may be a good boy.
(2)maybe means perhaps, an adverb.
ex: maybe you should talk to him.

2. I have noticed this mistake very frequently in written English, even from very well read people. In spoken English, it's difficult to make out whether the person saying it is actually meaning the correct word :)
Everyday和Every day
Everyday and every day are commonly confused in English. There’s no difference in pronunciation, but using the wrong one when writing is a mistake in the everyday English you use every day.
Everyday is an adjective that means commonplace, ordinary, or normal.Everyday
Example: These shoes are great for everyday wear
Every day means "each day."
Example: I go to the park every day.
3.Ever since I have been on Quora, I am beginning to think 'lose' is the most misspelt word. Unfortunately, it is a mistake even autocorrect cannot correct because both forms - 'lose' & 'loose' are real words!
People here 'loose' weight, 'loose' their temper, 'loose' their belongings, 'loose' boyfriends and girlfriends...while I 'lose' my cool because my internet isn't good enough for me to correct all these loosely written answers...
We 'lose' weight which makes our trousers 'loose'. We 'lose' our cool, but that does not make us 'loose' people. When someone dies, then we 'lose' them, but when someone is immoral, he/she is 'loose'. When we breakup with someone, we 'lose' our boyfriend/girlfriend. We are footloose and fancy free, but when we misplace our slippers, we 'lose' them.
So, yes, my vote goes to 'lose' misspelt as 'loose', loosely speaking....I hate 'loose'y English.