keeping back (verb) bottle up: hold in check
Sinonime: agitated, blustering, blustery,
boisterous,
concentrated,
excessive,
exquisite,
extreme,
fierce, flaming,
impetuous,
intense, intensified,
raging, rampageous,
rough,
savage,
tempestuous,
terrible,
tumultous/tumultuous, ungovernable,
unrestrained,
vehement,
vicious,
violent,
wildAntonime: calm,
mild,
moderate,
peaceful, quiet