From messy (adj):

messier
adj comparative

messiest
adj superlative







Mes•sier (mes′ē ā′; Fr. me syā′), n.

Charles (sharl), 1730–1817, French astronomer.













mess•y /ˈmɛsi/ adj., -i•er, -i•est.

dirty, untidy, or disorderly:very messy in his personal habits.
jumbled; confused;
involving trouble or danger:a difficult, messy situation.
Her own house was not as pretty but much more interesting, and messier.
Lowry, Lois ANASTASIA KRUPNIK (3-IN-1) (2002)


`Then you'll find somebody you love, and that will be even messier.
Tony Parsons MAN AND WIFE (2002)


She had been named Damask by her mother, with just that same kind of spontaneity, only somehow messier.
Fay Weldon NOTHING TO WEAR AND N