grouchiest
Most ill-tempered
Grouchiest is the superlative of grouchy—the most ill-tempered or irritable among a group: He's the grouchiest person in the office before his morning coffee.
The word suggests persistent bad mood rather than sudden anger.
irritable
Most ill-tempered
- grumpiestMost ill-tempered
- testiestMost easily annoyed
- snappiestMost crisp and lively
- touchiestMost easily offended
prickliest · crabbiest · snappish · short-tempered · irascible · cantankerous · peevish · petulant
crankiest
Most ill-tempered
touchiest · prickliest · crabbiest · snappish · short-tempered · irascible · cantankerous · peevish · petulant · fractious
sullen
Silently bad-tempered
brooding · scowling · frowning · glum · dour · surly · churlish · miffed · resentful · huffy
grumbling
Muttering in discontent
- whiningProlonged nasal complaining
- gripingVoicing persistent complaints
- kvetchingChronic petty complaining
carping · bellyaching · muttering · grousing · fussing · nitpicking · nagging · moaning · critical · faultfinding