ἐπ' ἀλλήλοισιν ἀμφικείμενοι → locked in each other's arms, clinging to one another
P. σφοδρός, P. and V. θερμός.
eager: P. and V. ἔντονος, σύντονος, ὀξύς; see eager.
vigorous: P. and V. νεανικός; see vigorous.