Usage: 2 forms in 5 verses
Form Translated As     In Verse(s)
καθαριότητι cleanliness LXX.Exod.24.10
καθαριότητα cleanliness LXX.2Sam.22.21LXX.2Sam.22.25LXX.Ps.18.20LXX.Ps.18.24

Liddell-Scott-Jones

καθαριότης (kathariotēs) cleanliness G:N-F

καθαριότης-ότης, ητος, ,

purity of αἰθήρ as compared with ἀήρ, [LXX+5th c.BC+]; τῶν εἰδῶν κ. [Refs 5th c.AD+]

__2 cleanliness, of a town, [Refs 5th c.BC+]
__3 clearness, ὀφθαλμῶν [Refs 5th c.BC+]
__4 moral purity, ψυχῆς [Refs]
__5 honesty, περὶ τὰ χρήματα κ. [Refs 2nd c.BC+]; ἐπιείκεια καὶ κ. [Refs 4th c.AD+]; πίστις καὶ κ. [Refs 2nd c.BC+]
__6 purity, lucidity, of literary style, [Refs]
__7 as a title, Rectitude, Holiness, [Refs 4th c.AD+]