grouchy (adj.)

• complaining
• crabby
• cranky
• disappointed
• discontented
• disgruntled
• displeased
• dissatisfied
• envious
• faultfinding
• gruff
• grumbling
• grumpy
• malcontent
• murmuring
• peevish
• petulant
• querulous
• rebellious
• resentful
• restive
• restless
• sulky
• unaccommodating
• uneasy
• unfulfilled
• ungratified
• unhappy
• unsatisfied
• whiny