1. To chance to be or do something, without intention or causation.
2. To come into being; become reality; SYN. materialize.
3. To come to pass; occur; SYN. hap, go on, pass off, occur, pass, come about, take place.
4. To happen, occur, or be the case in the course of events or by chance; (Santayana); SYN. befall, bechance.