monster
From LSJ
English > Greek (Woodhouse)
substantive
beast: Ar. and P. θηρίον, τό, P. and V. θήρ, ὁ, Ar. and V. κνώδαλον, τό, V. δάκος, τό. κύων, ὁ, sometimes κακόν, τό.
fabulous monsters: P. φύσεις μεμυθολογημέναι (Plato).
sea monster: V. κῆτος, τό (Euripides, Fragment).
portent: P. and V. τέρας, τό (Plato).
Met., of a person: Ar. and P. θηρίον, τό.