indulge (v.) Look up indulge at Dictionary.com
formerly also endulge, 1630s, "to grant as a favor;" 1650s, "to treat with unearned favor" (in reference both to persons and desires), a back-formation from indulgence (q.v.), or else from Latin indulgere "be complaisant, be indulgent, yield; give oneself up to;" probably a compound verb with first element in- "in," but the second element is obscure. Related: Indulged; indulging; indulgingly.