A.T. Robertson Commentary Luke 18:9

"And he spake also this parable unto certain who trusted in themselves that they were righteous, and set all others at nought:" — Luke 18:9 (ASV)

Set all others at naught (εξουθενουντας τους λοιπους). A late verb εξουθενεω, like ουδενεω, from ουθεν (ουδεν), to consider or treat as nothing. In LXX and chiefly in Luke and Paul in the N.T.