| malevolent(adjective, sullen) |
| moping(adjective, low, gloomy, miserable, depressed) |
| obstinate(adjective, mean, difficult, irritable, sullen) |
| obstreperous(adjective, difficult, irritable, grumpy, cantankerous) |
| out of humor(expression, adjective, idiom, cross, short) |
| out of sorts(expression, adjective, idiom, difficult, attitude) |
| pugnacious(adjective, difficult, irritable, argumentative) |
| resentful(adjective, cross, unhappy, emotional, disagreeable) |
| restive(irritable, restless, peevish) |
| restless(irritable, peevish) |
| scowling(adjective, sullen, sullenness) |
| sharp(irritable, grumpy, bad-tempered, snappy, short-tempered) |
| snippy(rude, unpleasant, coarse, disagreeable, sullen) |
| tense(adjective, cross, emotional, vulnerable, touchy) |
| ungenial(adjective, sullen) |
| ungracious(adjective, difficult, rude, unpleasant, unfriendly) |
| unkind(adjective, unpleasant, disagreeable, surly, ill-tempered) |
| vexed(adjective, short, discontented, resentful, testy) |
| volatile(adjective, delicate, sensitive, tricky, impatient) |
| murmuring(grumpy, testy) |