θάτερα
From LSJ
Τὸ μανθάνειν δ' ἥδιστον εὖ λέγοντος, εἰ κέρδος λέγοι → It is the sweetest thing to learn from one speaking well, if they speak profitably
French (Bailly abrégé)
v. ἕτερος.
German (Pape)
= τὰ ἕτερα.
Lexicon Thucydideum
altera pars, other side, opposite party, 1.87.2, 6.37.2, 6.84.4, 8.33.2.