i-adjective
Slang adjective derived from グロ (grotesque). Used for things that are visually disturbing, gory, or repulsive in a crude way.
そのホラー映画はグロすぎて見ていられなかった。
That horror movie was so grotesque I couldn't keep watching.
グロい画像を送らないでよ。
Don't send me gross pictures.