variante(s): facinoroos

adj.

'atroce, criminel à l'excès'

D: 15^e s. Béarn ⊂ LespyR 1:301b (‑oos)

FEW 3:358b [ꜰᴀᴄɪɴᴏʀᴏѕᴜѕ].