She gets 'ratty' [=('chiefly US') 'cranky'] if she doesn't get enough sleep.
Those shoes are getting pretty 'ratty'.
a 'ratty' [='shabby'] old sweater
(..) that's for sure. God be my witness, he got another thing coming! He left us dollars that night you was found. ratty dollars and a filthy diaper! -Good night, Mom. -Good night, baby. Did I ever tell you, I was struck by lightning times? (..)2008 The Curious Case of Benjamin Button