χαλαστέον
From LSJ
οὗτος μὲν ὁ πιθανώτερος τῶν λόγων εἴρηται, δεῖ δὲ καὶ τὸν ἧσσον πιθανόν, ἐπεί γε δὴ λέγεται, ῥηθῆναι → this is the most credible of the stories told; but I must relate the less credible tale also, since they tell it
English (LSJ)
one must relax, Herod.Med. in Rh.Mus.58.91, Gal.Sect.Intr.7.
Greek (Liddell-Scott)
χαλαστέον: δεῖ χαλᾶν, Σωρ. Ἐφ. ἔκδ. Erm. σ. 81.