adjective, rat·ti·er, rat·ti·est.

full of rats.
of or characteristic of a rat.
wretched; shabby: a ratty, old overcoat.
Slang. irritable or angry; bad-tempered; nasty: I always feel ratty when I wake up.

Origin of ratty

First recorded in 1860–65; rat + -y1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for ratty

worn, decayed, dilapidated, old, unkempt

Examples from the Web for ratty

Contemporary Examples of ratty

Historical Examples of ratty

British Dictionary definitions for ratty


adjective -tier or -tiest

British and NZ informal irritable; annoyed
informal (of the hair) unkempt or greasy
US and Canadian slang shabby; dilapidated
Australian slang
  1. angry
  2. mad
of, like, or full of rats
Derived Formsrattily, adverbrattiness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for ratty

1856, "resembling a rat;" 1865, "full of rats;" 1867, "wretched, miserable, shabby," from rat (n.) + -y (2).

Online Etymology Dictionary, © 2010 Douglas Harper