πιστῶς
From LSJ
οὐκ ἔστιν οὐδείς, οὐδ' ὁ Μυσῶν ἔσχατος → there is nobody, not even the last of the Mysians | there is nobody, not even the meanest of mankind
French (Bailly abrégé)
adv.
1 fidèlement;
2 de bonne foi;
3 d'une manière digne de foi;
Sp. πιστότατα.
Étymologie: πιστός¹.
Russian (Dvoretsky)
πιστῶς:
1 верно, тж. честно, добросовестно (πράσσειν Dem.);
2 убедительно, достоверно (φαίνεσθαι Plat.).