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Λύπης ἰατρός ἐστιν ὁ χρηστὸς φίλος – A true friend is grief's physician.
docile: P. εὐάγωγος, εὐήνιος, V. εὔαρκτος; see docile.
amenable to, obedient to: P. and V. εὐπειθής (dat.).
liable: P. and V. ὑπεύθυνος, P. ὑπόδικος, ὑπαίτιος, ἔνοχος.
be amenable to, allow of: P. ἐνδέχεσθαι (acc.).