happen >> ˈhap(ə)n
Definition: [verb] take place; occur.
Example: two hours had passed and still nothing had happened
Definition: [verb] find or come across by chance.
Example: I happened on a street with a few modest restaurants
Definition: [verb] be experienced by (someone); befall.
Example: the same thing happened to me
Definition: [adverb] perhaps; maybe.
Example: happen I'll go back just for a while