ὀνομάτιον
From LSJ
πείθεται πᾶς ἥδιον ἢ βιάζεται (Dio Cassius, Historiae Romanae 8.36.3) → it's always more pleasant to be persuaded than to be forced
English (LSJ)
τό, Dim. of ὄνομα, Longin.43.2, Arr.Epict.2.23.14: without dim. sense, POxy.2131.9 (iii A.D.).
German (Pape)
[Seite 349] τό, dim. von ὄνομα, kleiner Name, Wörtchen, Longin.
Greek (Liddell-Scott)
ὀνομάτιον: τό, ὑποκοριστ. τοῦ ὄνομα, Λογγῖν. 43. 2, Ἀρρ. Ἐπίκτ. 2. 23, 14.