grumpiest
Least pleasant person
Grumpiest is the superlative of grumpy—the most ill-tempered or irritable among a group: He's the grumpiest person in the office before his morning coffee.
The word often carries affectionate undertones, suggesting cantankerousness rather than genuine hostility: Grandpa was the grumpiest of the bunch, but we loved him for it.
temperament
Most ill-tempered
- grouchiestMost bad-tempered
- crabbiestMost bad-tempered
- surliestMost ill-tempered
- gruffestMost harsh-voiced, unfriendly
moodiest · testiest · prickliest · touchiest · snappiest · crossest · sourest · crotchetiest
discontent
Superlative of sorrowful
- sourestMost acidic in flavor
- bitterestSuperlative of harsh taste
- glummestSuperlatively downcast
- malcontentChronically dissatisfied person
crankiest
Most ill-tempered
- grouchiestMost bad-tempered
- crabbiestMost bad-tempered
- surliestMost ill-tempered
gruffest · moodiest · testiest · prickliest · touchiest · snappiest · crossest · sourest · crotchetiest · cantankerous
unhappiest
Superlative of sorrowful
malcontent · pouty · sulky
whiniest
Most given to complaining
- fussiestMost overly particular
- nitpickiestMost overly critical
- kvetchHabitual grumbler