perdicium
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
Latin > English (Lewis & Short)
perdīcĭum: ĭi, n., = περδίκιον>.
I Pellitory: helxinen vocant, Plin. 22, 17, 19, § 41.—
II The plant parthenium, Plin. 21, 30, 104, § 176.