I. Act., of ships, unseaworthy, “τριήρεις” And.3.5; “ναῦς ἄπλους ποιεῖν” Th.7.34; νῆες ἅπλοι ἐγένοντο ibid.: of persons, “ναύκληρον . . ποιήσας ἄπλουν” Crito Com.3: Comp., “ἀπλοώτεραι νῆες” less fit for sea, Th.7.60 (codd.; “ἀπλούστεραι” Suid.).
II. Pass., of the sea, not navigable, closed to navigation (cf. ἄπλοια)“, ἄπλους ἡ θάλαττα ὑπὸ τῶν . . λῃστῶν γέγονεν” D.18.241; “ἅλμη” A.R.4.1271; “Πόντος” Plb.4.38.7: metaph., “αἰθήρ” Nonn.D.6.358.