impatient β not patient; not accepting delay, opposition, pain, etc., with calm or patience.
impetuous β of, relating to, or characterized by sudden or rash action, emotion, etc.; impulsive: an impetuous decision; an impetuous person.
inflammable β capable of being set on fire; combustible; flammable.
intolerant β not tolerating or respecting beliefs, opinions, usages, manners, etc., different from one's own, as in political or religious matters; bigoted.
irascible β easily provoked to anger; very irritable: an irascible old man.
mercurial β changeable; volatile; fickle; flighty; erratic: a mercurial nature.
moody β given to gloomy, depressed, or sullen moods; ill-humored.
nervous β highly excitable; unnaturally or acutely uneasy or apprehensive: to become nervous under stress.
neurotic β pertaining to the nerves or to nerve disease; neural: no longer in technical use.
overzealous β too zealous: overzealous for reform.
passionate β having, compelled by, or ruled by intense emotion or strong feeling; fervid: a passionate advocate of socialism.
peevish β cross, querulous, or fretful, as from vexation or discontent: a peevish youngster.
quick β done, proceeding, or occurring with promptness or rapidity, as an action, process, etc.; prompt; immediate: a quick response.
touchy β apt to take offense on slight provocation; irritable: He is very touchy when he's sick.
uncontrolled β to exercise restraint or direction over; dominate; command: The car is difficult to control at high speeds. That zone is controlled by enemy troops.
uneasy β not easy in body or mind; uncomfortable; restless; disturbed; perturbed.
vehement β zealous; ardent; impassioned: a vehement defense; vehement enthusiasm.
violent β acting with or characterized by uncontrolled, strong, rough force: a violent earthquake.
volatile β evaporating rapidly; passing off readily in the form of vapor: Acetone is a volatile solvent.
volcanic β of or relating to a volcano: a volcanic eruption.
blazing β Blazing sun or blazing hot weather is very hot.
burning β You use burning to describe something that is extremely hot.
combustible β A combustible material or gas catches fire and burns easily.