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2Signification: tirelessenergetic unfailing inexhaustibleunflagging stalwart indefatigable
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3Signification: diligentassiduous indefatigable persevering persistentsedulous untiring patient
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4Signification: tenaciousenduring dogged immovable insistentindefatigable persevering persistent
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5Signification: strongrugged hale tough indefatigablehealthy unflagging robust hardy