The headword is the unaugmented first person plural, aorist indicative passive, of the epic/Ionic verb te/rpw, I delight, gladden, cheer, sate, with the zero-grade of the root; see generally LSJ, and Cunliffe (p. 378) s.v. The entry is generated by the earliest extant instance of the headword form: Homer, Iliad 11.780 (web address 1); cf. next note. There Nestor recounts, to Patroclus, how he and Odysseus were once sated with food and drink at Achilles' palace halls in Phthia (phi 489; Barrington Atlas map 55 grids C2-D2).
[1] Except that it retains the augment, the lemma is the same grammatical form as the headword, but from the verb kore/nnumi, I satiate, fill up; see generally LSJ s.v. The lemma is identically glossed by Hesychius, and the entry follows a scholion (= D scholia, Iliad 11.779) pertinent to the aforementioned Homeric passage; cf. ps.-Zonaras 1714.18 and Etymologicum Magnum 746.52 (Kallierges). Adler also cites Lexicon Ambrosianum 117 as identical.