Indulgent

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early 16th century: from French, or from Latin indulgent- ‘giving free rein to’, from the verb indulgere .

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etymonline

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indulgent (adj.)

"lenient, willing to overlook faults," often in a bad sense, "too lenient," c. 1500, from Latin indulgentem (nominative indulgens) "kind, tender, fond," present participle of indulgere "be kind, be complaisant, yield" (see indulgence). Related: Indulgently.