1. come to pass;"What is happening?""The meeting took place off without an incidence""Nothing occurred that seemed important"
2. happen, occur, or be the case in the course of events or by chance;"It happens that today is my birthday""These things befell" (Santayana)
3. chance to be or do something, without intention or causation;"I happen to have just what you need!"
4. come into being; become reality;"Her dream really materialized"
5. come upon, as if by accident; meet with;"We find this idea in Plato""I happened upon the most wonderful bakery not very far from here""She chanced upon an interesting book in the bookstore the other day"