The headword is present middle subjunctive of proe/xw (pi 2401), first person plural. Same or similar glossing in other lexica (references at Photius pi1223 Theodoridis), based on Ep. Romans 3.9, where the corresponding indicative occurs, with this subjunctive as a variant reading (web address 1). The RSV translates, "Are we Jews any better off?" but offers an alternative interpretation in a footnote: "at any disadvantage?"