saggyEnglishOxford New American Dictionarysaggy /ˈsaɡē, ˈsæɡi / ▸ adjective (saggier, saggiest) tending to sink or bulge downward under weight or pressure: the saggy mattress groaned under my weight. ▪ hanging down loosely; drooping: a facelift can reduce saggy skin and wrinkles saggy jeans.