τὸ πλῆθος οὐκ εὐαρίθμητον ἦν → the crowd wasn't easy to count, the crowd was not small, it was not a small crowd
ἄσημος, νώνυμος, ἄγνωστος, ἄγνωτος, ἀδάητος, ἄδηλος, ἀγνώς, ἄδοξος, ἀνιστόρητος, ἀμαυρός, ἀφανής