Usage: 7 forms in 7 verses
Form Translated As     In Verse(s)
τερφθήτωσαν Let them be made happy LXX.Ps.68.3
τερφθήσεται it shall be made happy LXX.Ps.35.9
τερπομένων delighting LXX.Job.39.13
τέρψεισ you shall make happy LXX.Ps.65.8
τέρπου Be happy LXX.Zech.2.10
τέρπεται happy LXX.Prov.27.9
ετέρφθην I delighted LXX.Ps.119.14

Liddell-Scott-Jones

τέρπω (terpō) to delight G:V

τέρπω,

[Refs 8th c.BC+]; Epic dialect subjunctive τέρπῃσι [Refs]: Ionic dialect imperfect τέρπεσκον [Refs 4th c.AD+]: future τέρψω [Refs 5th c.BC+]: aorist ἔτερψα [Refs 5th c.BC+] —the passive and middle have a fivefold aorist,

__1 ἐτέρφθην [Refs 8th c.BC+]; rare in Prose, [Refs 8th c.BC+]
__2 _Epic dialect_ ἐτάρφθην, τάρφθην, 8th c.BC: Odyssea Homerus Epicus “Odyssey” 6.99, 19.213, 251, 21.57.
__3 _Epic dialect_ ἐτάρπην, τάρπην, [Refs 8th c.BC+]; infinitive ταρπῆναι [Refs 8th c.BC+]subjunctive τρᾰπείω, Epic dialect 1st pers. plural τρᾰπείομεν (see. below [Refs]
__4 Epic dialect also ἐταρπόμην, only in 1st pers. plural subjunctive ταρπώμεθα [Refs 8th c.BC+]; also reduplicate through all moods, τετάρπετο [Refs 8th c.BC+]
__5 aorist 1 ἐτερψάμην, in Epic dialect subjunctive τέρψομαι [Refs] is future middle in [Refs 8th c.BC+]; participle τερψάμενος [Refs 8th c.BC+]:—delight, gladden, cheer, κεν τέρπῃσιν ἀείδων [Refs 8th c.BC+]; θοίνῃ σε τ. [Refs 5th c.BC+]; ἀγγελίη.. ἔτερψε [αὐτούς] [Refs 5th c.BC+]; sometimes in Attic dialect Prose, ἔπεσι.. τὸ αὐτίκα τέρψει will give momentary pleasure, [Refs 5th c.BC+]; τ. τὴν ἀκοήν, τὰς ἀκοάς, [Refs 1st c.BC+]; ἧλιξ τέρπει τὸν ἥλικα, proverbial in [Refs 5th c.BC+]: absolutely, give delight, [Refs 8th c.BC+]; τὰ τέρποντα delights, [Refs]; ῥήματα τέρψαντά τι[Refs 5th c.BC+]
__II more frequently in passive and middle,
__II.1 in Epic dialect the aorist passive is used, with genitive of things, have full enjoyment of, enjoy to one's heart's content, ἐπεὶ τάρπημεν ἐδητύος ἠδὲ ποτῆτος [Refs 8th c.BC+]; ὕπνου, εὐνῆς ταρπήμεναι,[Refs 8th c.BC+]: metaphorically, take one's fill of lamentation, τεταρπώμεσθα γόοιο [Refs 8th c.BC+]
__II.2 enjoy or delight oneself, with dative instrumental, φρένα τ. φόρμιγγι [Refs 8th c.BC+]; φιλότητι (or ἐν φ.) τραπείομεν εὐνηθέντε [Refs 8th c.BC+]; so in Trag., λαμπάδι τερπόμεναι [Refs 5th c.BC+]; delight in, τῇ τῶν πυραμίδων μεγαλειότητι [Refs 1st c.AD+]; τοῖς εὐώδεσι [Refs 5th c.BC+]: with participle, λόγοις.. οἷς σὺ μὴ τέρψῃ κλύων [Refs 5th c.BC+]; τί ἂν.. ἀκούσας τερφθείη; [Refs 5th c.BC+] drink and be merry, [Refs 5th c.BC+]
__II.3 with internal accusative, οἴην μοῖραν δέκα μοιρέων τέρπεται ἀνήρ has only one tenth part of the enjoyment, [Refs 8th c.BC+]
__II.4 frequently with words which limit its sense, θυμῷ [Refs 8th c.BC+]. (Cf. Sanskrit trpnoti 'take one's fill', Causative tarpáyati 'delight (transitive)', Opruss. ka enterpo.. ? 'what is the use of..?', Gothic paurfts, O[Refs 5th c.BC+]pearf 'benefit', Gothic parf 'I need'.)