σιγᾶν ἄμεινον ἢ λαλεῖν ἃ μὴ πρέπει → it's better to keep silence than to say what's not appropriate (Menander)
subs.
Injustice: P. and V. ἀδίκημα, τό. Make it a grievance that: Ar. and P. ἀγανακτεῖν, εἰ . . . P. χαλεπῶς φέρειν εἰ . . . δεινὸν ποιεῖσθαι εἰ; see complain.