πωλεῖσθαι

From LSJ

ὥστεβίος, ὢν καὶ νῦν χαλεπός, εἰς τὸν χρόνον ἐκεῖνον ἀβίωτος γίγνοιτ' ἂν τὸ παράπαν → and so life, which is hard enough now, would then become absolutely unendurable

Source

Lexicon Thucydideum

versari, to be engaged in, 3.104.5 (ex. Hom. H. Ap. from Homer's Hymn to Apollo)