τερατικός
From LSJ
ἄλογον δὴ τὸ μήτε μάχης ἄρξασθαι μήτε τοὺς φίλους φυλάξαι, ἐὰν ὑπό γε τῶν βαρβάρων ἀδικῆσθε → It is irrational neither to begin battle nor to guard the friends, if you are ever wronged by the foreigners
German (Pape)
[Seite 1092] = τεράστιος, Plut. adv. Colot. 29 im adv.
Greek (Liddell-Scott)
τερατικός: -ή, -όν, = τεράστιος, Βασίλ. 1, 589D. Ἐπίρρ. -κῶς, Νικ. Εὐγ. 8, 259.