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Cythēris, ĭdis, f., a mistress of Antonius (Cic. Fam. 9, 26, 2; id. Att. 10, 10, 5 al.), who is sarcastically called Cythērĭus, Cic. Att. 15, 22 fin.; Plin. 8, 16, 21, § 55.