ψιλωτέον
From LSJ
κόραξ δ' ἐπαίνῳ καρδίην ἐχαυνώθη → the flattered crow was filled with pride, the flattered crow became elate in heart
English (LSJ)
A one must write or pronounce with the spiritus lenis, Sch.Il.1.335, etc.
Greek (Liddell-Scott)
ψῑλωτέον: ῥημ. ἐπίθ., πρέπει τις νὰ μεταχειρισθῇ ψιλήν, Σχολ. εἰς Ἰλ. Α.335, κλπ.