1) ずるい Parts ズル い #2,489 Inflections of ずるい Class I-adjective Stem Inflected ending ✕ Link copied! Common ずるい [2] Meaning Shirabe ① I-adjective Usually kana sly; cunning; sneaky; crafty; unfair; dishonest 狐きつねは他たのどんな動物どうぶつよりもずるいということだ。 It is said that the fox is more cunning than any other animal. ② I-adjective Usually kana miserly; mean; stingy Only applies to こすい Forms ずるい#2,489ずるいズルイ#23,424ズルイ狡い#28,155狡ずるいこすい#43,246こすい