from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Surly and peevish; cranky.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Unhappy, dissatisfied and/or irritable, a word which is particularly applied to babies and children or adults who are acting childishly.
from the GNU version of the Collaborative International Dictionary of English
- adj. Surly; dissatisfied; grouty.
from The Century Dictionary and Cyclopedia
- Surly; gruff; glum.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. annoyed and irritable
grump + -y (Wiktionary)