The unglossed headword, evidently extracted from the quotation given, is a two-ending adjective, peri/komyos, in the masculine and feminine accusative plural; see generally LSJ s.v. It is attested only here.
[1] Aristophanes, Peace 993-8 (web address 1), here abridged: Trygaeus, addressing Peace, has an optimistic moment prior to the sacrifice for her; cf. sigma 1154. [In her critical apparatus Adler notes that ms F omitted this text as well as the following repeated verb form.]
[2] From the scholia to line 995 of this Aristophanic passage; again at sigma 1154. The verb form picked out for comment is the present indicative middle/passive, first person plural, of stwmu/llw, I chatter, am talkative; see generally LSJ s.v. The glossing verb, with a more disparaging sense, is the present indicative active, first person plural, of the contract verb fluare/w, I talk nonsense, babble, play the fool; see generally LSJ s.v. [Adler notes that ms A omitted this note and that ms F transmits flua/rous: meaning [sc. we speak] foolish things.]