P. and V. πραΰνειν.
stop, check: P. and V. παύειν.
make lighter: P. and V. ἐπικουφίζειν, ἀπαντλεῖν (Plato), V. ἐξευμαρίζειν, κουφίζειν.
lull to rest: P. and V. κοιμίζειν (Plato), V. κοιμᾶν.
assuage one's thirst: use P. and V. πίνειν; see quench.