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The meeting was an accidental encounter.
They didn't plan to meet; it happened by chance.
Happening by chance or unexpectedly, not planned
She made an accidental discovery while cleaning the attic.
She found something valuable unexpectedly.
Often used to describe events or actions that were not intended.
Use 'accidental' to describe events that were not planned or intended.
From Latin 'accidentālis', meaning 'happening by chance'
Can be used to describe both positive and negative unplanned events.