spongyPronunciation: /ˈspʌn(d)ʒi/ (also spongey)Translate spongy | into German | into Italian Definition of spongy adjective (spongier, spongiest) like a sponge, especially in being porous, compressible, or absorbent:a soft, spongy blanket of moss (of metal) having an open, porous structure:spongy platinum (chiefly of a motor vehicle’s braking system) lacking firmness. Derivatives spongily adverb sponginess noun spongy in other Oxford dictionaries Definition of spongy in the US English dictionary