Happened or befallen; occurred by chance (archaic or poetic).
Past tense or past participle of 'bechance,' formed with the 'be-' prefix plus the past tense of 'chance'; describes an event that has come to pass.
In medieval literature, when something important was 'bechanced,' it meant the universe had conspired to make it happen—a very different feeling than mundane modern 'happened.'
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