Translation of "fluently" into Basque

The three young men were budding artists; two of them came from the Bilbao School of Fine Arts and the third was a Basque from Arrasate, who spoke Euskera fluently, but whose Spanish had a strong Navarran accent, from Ribera. The latter was studying in Pamplona.

Hiru gazteak heldugabeko artistak ziren; haietako bi Bilboko Arte Ederren Eskolatik zetozen eta hirugarrena Arrasateko gipuzkoar bat zen, hitz-jarioz euskara hitz egiten zuena, baina zeinaren gaztelaniak azentu nafar indartsua zuen, Erriberakoa. Azken honek Iruñean ikasten zuen.