grumbliest
Prone to muttering
Grumbliest is the superlative of grumbly—the most inclined to grumble or complain.
He's always the grumbliest before his morning coffee.
The word carries an affectionate or humorous tone, suggesting petty complaints rather than serious grievances.
Most easily annoyed
- peevishHabitually fretful
- petulantChildishly bad-tempered
- snappishShort-tempered, biting
- tetchyEasily provoked to irritation
touchy · irascible · fractious · querulous · short-tempered · choleric · splenetic · snarly
Most ill-tempered
- grouchiestMost bad-tempered
- crotchetiestMost irritably stubborn
- curmudgeonlyBad-tempered and uncooperative
- cantankerousBad-tempered and argumentative
surliest · churlish · crabby · gruffest · dour · morose · glum · sullen
Most given to complaining
- kvetchingChronic petty complaining
- bellyachingPersistent petty complaining
- gripingVoicing persistent complaints
- carpingTrivial persistent criticism
fussing · muttering · grousing · nitpicking · quibbling · nagging · caviling
Sullenly dissatisfied
- dissatisfiedUnhappy with results
- malcontentChronically dissatisfied person
- displeasedMildly angry or annoyed
- resentfulFeeling lingering ill will
bitter · disaffected · disillusioned · disenchanted · frustrated · fed-up
testiest
Most easily annoyed
tetchy · touchy · irascible · fractious · querulous · short-tempered · choleric · splenetic · snarly · waspish
crankiest
Most ill-tempered
- grouchiestMost bad-tempered
- crotchetiestMost irritably stubborn
- curmudgeonlyBad-tempered and uncooperative
cantankerous · surliest · churlish · crabby · gruffest · dour · morose · glum · sullen · bearish
whiniest
Most given to complaining
- kvetchingChronic petty complaining
- bellyachingPersistent petty complaining
- gripingVoicing persistent complaints
carping · fussing · muttering · grousing · nitpicking · quibbling · nagging · caviling
disgruntled
Sullenly dissatisfied
- dissatisfiedUnhappy with results
- malcontentChronically dissatisfied person
- displeasedMildly angry or annoyed
resentful · bitter · disaffected · disillusioned · disenchanted · frustrated · fed-up