fitting (adj.) Copy link • fitting (adj.): dĕcens: v. becoming. Esp. in phr.? it is f.: (1). dĕcet, 2 (with acc. and inf.): v. IT BECOMES. (2). aequum est: things which it is f. a young gentleman should know, quae liberum scire adolescentem aequum est, Ter.: v. reasonable, fair.