*anstiz

A feminine i-stem verbal abstract in *-(s)ti- related to *unnaną, whose stem alternation *ann- ~ *unn- ultimately continues Proto-Indo-European *h₃neh₂-; compare Ancient Greek ὀνίνημι (onínēmi) (Kroonen 2013: 30, 560; Mees 2022a: 289–90; Rix et al. 2001: 302–03; Scheungraber 2010: 94–96). The origin of the *s is disputed: *anstiz may contain an inherited *-sti- formation, as explicitly assumed by Mihaylova (2020: 16) (*h₃enh₂-sti), but the sibilant may instead have arisen secondarily where the dental abstract suffix followed geminate *nn (Mees 2022a: 289–90; Krahe & Meid 1969: 163–68; Scheungraber 2010: 87–90). The Greek form supports the PIE root connection but has undergone substantial remodeling (Rix et al. 2001: 302–03; Scheungraber 2010: 94–96).