-a bad-tempered, difficult, cantankerous person.
-An ill-tempered person full of resentment and stubborn notions.
"Look," growled Harrison's mother, "I know you don't like getting up in the morning, but that's no reason to be such a curmudgeon and take it out on your brother!"
My apologies for missing these past couple weeks; school's been exhaustingly busy. I'm sorry; I won't be making it up with more words this time. D=