βεβαιώτρια
From LSJ
Οἱ βασιλεῖς τῇ ἐγκυκλοπαιδείᾳ, αὐτὴ τοῖς βασιλεῦσι (Salamanca inscription) → The kings for the university, and the university for the kings
English (LSJ)
ἡ, fem. of βεβαιωτής, ib.994 iii 7 (ii B. C.), PStrassb. 88.29 (ii B. C.), etc.
Spanish (DGE)
-ας, ἡ
jur. mujer garante legal en una venta προπωλήτρια καὶ β. τῶν κατὰ τὴν ὠνὴν ταύτην πάντων PStras.88.29, cf. BGU 994.3.7, PGrenf.1.33.49, PLond.882.17 (todos II a.C.), PLips.2.9 (I a.C.).