sáfna comes from the Medieval Greek ísα ‘exactly’ and the Lesbian local adverb éfna ‘there’ (éftu + na) (Anagnostou 1903˙ Alvanos 2011˙ Ralli 2017˙ Ralli 2019).
E.g. tú-vris? sáfna t-afíka.
to-vríces? ísa-éfna to áfisa.
‘Did you find it? I left it there’.