P. and V. πρόθυμος, ἔντονος, σύντονος, θερμός, ὀξύς, σπουδαῖος (Sophocles, Fragment), Ar. and V. θούριος, V. αἴθων, θοῦρος, Ar. and P. ἰταμός, P. σφοδρός.
bold: P. and V. θρασύς, τολμηρός.