κρουστικός
From LSJ
ὕπνος δεινὸν ἀνθρώποις κακόν → sleep is a terrible evil for humans (Menander, Sententiae monostichoi 1.523)
English (LSJ)
ή, όν,
A fit for striking, butting, of a ram, Ph.1.113. II able to sound the right note, ὄργανα Arist.Pr.918a33; κ. θίξις χορδῶν, opp. ἠθική, Plu.2.802f. 2 metaph., of a rhetorician or sophist, striking, impressive, Ar.Eq.1379; τὸ κ. striking eloquence, Luc.Dem.Enc.32.