*artijaną

Probably from Proto-Indo-European *Hord-éye/o-, the causative of root *Herd-. Vedic Sanskrit अर्दयति (ardáyati) is the closest formal and semantic cognate. The semantic development is ‘cause to shake, agitate’ > ‘provoke, irritate, tease’ (Jamison 1983: 107; Rix et al. 2001: 223–24). Lithuanian ardyti and Proto-Slavic oriti are related Balto-Slavic comparanda, though not exact cognates (Derksen 2008: 374). Alternatively, the verb has been connected with PIE *h₂erd-, compare Ancient Greek ἄρδις (árdis) and Old Irish aird; LIV treats this as a separate alternative, but Beekes is unconvinced of the connection (Beekes 2010: 127, s.v. ἄρδις; Rix et al. 2001: 223–24, s.v. Herd- n. 2).