φίλτερος
From LSJ
τίς τὸν πλανήτην Οἰδίπουν καθ' ἡμέραν τὴν νῦν σπανιστοῖς δέξεται δωρήμασιν → who on this day shall receive Oedipus the wanderer with scanty gifts
English (LSJ)
α, ον, irreg. Comp. of φίλος, Il.11.162, Od.11.360, Hes. Op.309, Pi.I.1.5, E.El.243, Alc.432, Hipp.185 (anap.) (not in A. or S.): in later Prose, D.C.64.14, Jul.Or.2.89a.
German (Pape)
[Seite 1289] unregelm. compar. zu φίλος, w. m. s.