n. 25B6; noun
there was a chance he might be released : POSSIBILITY, prospect, probability, likelihood, likeliness, expectation, anticipation; risk, threat, danger.
I gave her a chance to answer : OPPORTUNITY, opening, occasion, turn, time, window (of opportunity); N. Amer. & Austral./NZ show; informal shot, look-in.
Nigel took an awful chance : RISK, gamble, venture, speculation, long shot, leap in the dark.
pure chance : ACCIDENT, coincidence, serendipity, fate, destiny, fortuity, providence, happenstance; good fortune, (good) luck, fluke.
25B6; adjective a chance discovery : ACCIDENTAL, fortuitous, adventitious, fluky, coincidental, serendipitous; unintentional, unintended, inadvertent, unplanned.
intentional.
25B6; verb
I chanced to meet him : HAPPEN.
(informal) she chanced another look : RISK, hazard, venture, try; formal essay.
25A0; by chance FORTUITOUSLY, by accident, accidentally, coincidentally, serendipitously; unintentionally, inadvertently.
25A0; chance on/upon COME ACROSS/UPON, run across/into, happen on, light on, stumble on, find by chance, meet (by chance); informal bump into; archaic run against.