chance >> /tʃæns/
Definition: [verb] Do something by accident or without design.
Example: if they chanced to meet
Definition: [verb] Do (something) despite its being dangerous or of uncertain outcome.
Definition: [noun] A possibility of something happening.
Example: there is little chance of his finding a job
Definition: [noun] The occurrence and development of events in the absence of any obvious design.
Example: he met his brother by chance
Definition: [adjective] Fortuitous; accidental.
Example: a chance meeting