radostьnь,
etiam:
HR
EN
GR
LA
alacer, gaudenter, gaudere, gratus, laetus, prosper, exsultatio, laetitia, exultationis
Cf.
blagodêtьnь, dragw, lxpw, prixtwnw, ugodwnw, blagovolwnw, radostwnw, veselь, veselьnь