Usage: 4 forms in 4 verses
Form Translated As     In Verse(s)
χαρμοσύνησ of joyfulness LXX.Jer.33.11
χαρμοσύνηνσ of joyfulness LXX.Lev.22.29
χαρμοσύνην joyfulness LXX.Jer.31.13
χαρμοσύνη joyfulness LXX.1Sam.18.6

Liddell-Scott-Jones

χαρμοσύνη (charmosunē) joyfulness G:N-F

χαρμοσύνη, ,

joyfulness, delight, [LXX+1st c.AD+]

__II day of rejoicing, ἑορταὶ καὶ χ. [LXX]

LSJ Scripture Refs: LXX.1Kgs.18.6LXX.Jer.40.11*