wirkungslos

From LSJ

αἰθὴρ δ᾽ ἐλαφραῖς πτερύγων ῥιπαῖς ὑποσυρίζει (Aeschylus, Prometheus Bound 126) → The bright air fanned | whistles and shrills with rapid beat of wings.

Source

German > Latin

wirkungslos, s. unwirksam – w. sein od. bleiben, effectu carere (v. Plänen).