προστυχών
From LSJ
Εὔτολμος εἶναι κρῖνε, τολμηρὸς δὲ μή → Audentiam tibi sume, non audaciam → Entschlossen zeige Mut, doch nicht Verwegenheit
Russian (Dvoretsky)
προστυχών: part. к προστυγχάνω.
English (Woodhouse)
(see also: προστυγχάνω) casual, chance, any chance person, appearing by chance, first comer, the man in the street