Cynthia is the pseudonymous beloved dominating Propertius's elegiac poetry, her name deriving from Mount Cynthus, birthplace of Diana; she embodies intellectual beauty and emotional intensity. The character represents the demanding muse who both inspires and torments the poet, her complexity elevating love poetry beyond simple praise. Cynthia's literary presence demonstrates how beloved figures in classical poetry function as more than romantic objects, becoming symbols of the poetic vocation itself and the sacrifices art demands.

Cynthia appears in Propertius's elegies as a learned, demanding mistress who dominates the poet's life and work. Named for Diana's epithet (from Mount Cynthus), she represents both earthly woman and divine force. Unlike simpler pastoral beloveds, Cynthia embodies sophisticated urban culture, literary education, and the power dynamics of Roman love elegy where the woman controls the relationship. Poets invoke Cynthia when exploring the beloved as tyrant, the lover as willing slave, and poetry's creation through erotic subjection. The character demonstrates the elegiac tradition's complex representation of desire, power, and the construction of the beloved as simultaneously real and idealized.