LSJ
Att. πρῳζός, όν, dub.sens. in Call. Fr. 63 P. ; = προχθεσινός, ὑπόγυος, EM 691.56. neut. pl. πρωϊζά as Adv., = πρώην, χθιζά τε καὶ π. yesterday or the day before, Il. 2.303, cf. Pl. Alc. 2.141d. οὕτω δὴ π. κατέδραθες so very early, Theoc. 18.9; πρωϊζὸν ὁδεύων dub.sens. in Epic.Alex.Adesp. 4.6. (In codd. freq. written proparox., but cf. Hdn. Gr. 1.144.)
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
TBESG
1. neuter plural πρωιζά was used as adverb, just like πρώην, χθιζά τε καὶ πρωιζά yesterday or the day before , [Iliad by Homer (8th/7th c.BC)]
2. οὕτω δὴ πρ. κατέδραθες so very early , [Theocritus Poeta Bucolicus (Refs 3rd c.BC)] (ML)
Translators Brief lexicon of Extended Strongs for Greek based on Abbot-Smith, A Manual Greek Lexicon of the New Testament (1922) (=AS), with corrections and adapted by Tyndale Scholars