ill-natured
dissatisfied
grouchy
grouty
ill-tempered
surly
grumpier
grumpiest
allergy-prone
chummy
curtest
friendliest
glum
heart
leathery-faced
mulish
nonprofessional
persnickety
stiff-necked
triliteral
unregal
bumpy
clumpy
dumpy
frumpy
jumpy
lumpy