Usage: 4 forms in 5 verses
Form Translated As     In Verse(s)
εγλύκανασ you sweetened LXX.Ps.55.14
εγλυκάνθησαν was sweet LXX.Job.21.33
εγλυκάνθη was sweetened LXX.Exod.15.25
γλυκανθή should be sweet LXX.Job.20.12
should be sweetened LXX.Prov.24.13

Liddell-Scott-Jones

γλυκαίνω (glukainō) to sweeten G:V

γλυκαίνω-αίνω,

future γλυκαίνω-ᾰνῶ [LXX]: aorist ἐγλύκᾱνα [Refs 3rd c.AD+]:—sweeten, [LXX]; opposed to πικραίνω, [Refs 3rd c.AD+] [same place]; affect with a sensation of sweetness, τὴν ἀκοήν [Refs 1st c.BC+]: absolutely, produce an effect of sweetness, in Music, [Refs 4th c.BC+] M.:—more frequently in passive, future γλυκανθήσομαι [LXX]: aorist ἐγλυκάνθην [Refs 5th c.BC+]: perfect γεγλύκασμαι [Refs 2nd c.AD+]:—to be sweetened, turn sweet, [Refs 5th c.BC+]; to be affected with a sensation of sweetness, [Refs 1st c.BC+]