ἀνυστέον
From LSJ
To χάρις ὑμῖν οὕτω τίθησιν κτλ. → Thus he writes joy to you all, etc. (Cramer's Catena on 1 Thessalonians 1.1)
English (LSJ)
or ἀνyστέα, one must accomplish, Suid.
Spanish (DGE)
hay que realizar Sud.
Greek (Liddell-Scott)
ἀνυστέον: ἢ -έα, ῥημ. ἐπίθ. «δεῖ ἀνύειν» Σουΐδ. ἐν λ. ἄνυσται.