γυμνάζεσθαι
From LSJ
κείνους δὲ κλαίω ξυμφορᾷ κεχρημένους (Euripides' Medea 347) → I weep for those who have suffered disaster
Greek > English (Woodhouse Verbs Reversed)
(see also γυμνάζω): exercise oneself
Lexicon Thucydideum
exercere se, to practice, 1.6.5.