Lexical Definition

‎אָלַח‎ ʼâlach (aw-lakh') to corrupt H:V
a primitive root

become filthy.

1) (Niphal) to be corrupt morally, tainted

See Greek: ἀκάθαρτος · ἀχρειόω

Usage: 2 forms in 3 verses
Form Translated As     In Verse(s)
נֶ֫אֱלָ֥חוּ they are corrupt Ps.14.3Ps.53.3
וְֽנֶאֱלָ֑ח and is corrupt Job.15.16

Brown-Driver-Briggs

[‎אָלַח‎] verb only Niph`al be corrupt morally; tainted (Che Ps 14:3) (compare Arabic VIII. be confused (of a thing), of milk, turn sour) Perfect 3 plural ‎נֶאֱלָ֑חוּ‎ Ps 14:3; Ps 53:4* Participle ‎נֶאֱלָח‎ a corrupt man Job 15:16.

Brown-Driver-Briggs References

Book Refs
Job 15:16
Psalms 14:3 · 53:4*