τὸ γὰρ ὑπέγγυον δίκᾳ καὶ θεοῖσιν → liability to human and divine justice
without pay: P. and V. ἄμισθος (Dem. 731), or use adv.: P. and V. ἀμισθί.
unpunished: P. and V. ἀζήμιος; see unpunished.
useless: P. and V. ἀνωφελής; see useless.