pitiless
From LSJ
ἔγνω δὲ φώρ τε φῶρα καὶ λύκος λύκον → the thief knows the thief and the wolf knows the wolf, and thief knows thief and wolf his fellow wolf, set a thief to catch a thief
English > Greek (Woodhouse)
adjective
P. and V. σχέτλιος, σκληρός, πικρός, P. ἀπαραίτητος, V. νηλής, δυσπαραίτητος, ἀνοικτίρμων (Sophocles, Fragment), δυσάλγητος, Ar. and V. ἄνοικτος, ἄτεγκτος; see cruel.