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2Signification: pointlessaimless futile fatuous haphazardaccidental random purposeless
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3Signification: fortuitouschance accidental casual adventitiousrandom involuntary contingent unintentional
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4Signification: propertyaccidental incidental fortuitous unplannedrandom chance casual lucky
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5Signification: incidentalinsignificant dispensable accidental minornonessential secondary subsidiary expendable