Acrimonious
Stinging, bitter in temper or tone
belligerent
given to fighting, warlike; combative, aggressive; one at war, one engaged in war
bitter
harsh or corrosive in tone
Carping
tending to find fault, especially in a petty, nasty, or hairsplitting way; petty, nagging criticism
choleric
easily angered
Disappointed
disappointingly unsuccessful
Disgruntled
in bad humor, discontented, annoyed
Furious
marked by extreme anger
Grouchy
in a bad mood; irritable; sulky
Incredulous
disbelieving, skeptical
Indignant
angered at something unjust or wrong
Inflammatory
causing excitement or anger; leading to violence or disorder
Insulting
expressing offensive reproach
Irritated
aroused to impatience or anger
Outraged
angered at something unjust or wrong
Petulant
easily irritated or annoyed
Querulous
peevish, complaining, fretful
Savage
a cruelly rapacious person
Threatening
threatening or foreshadowing evil or tragic developments
Wrathful
enraged; punishing
Vitriolic
harsh or corrosive in tone
accusatory
charging of wrong doing