froths the mouth (verb) foam at the mouth: be uncontrollably angry
Sinonime: acerbity, asperity, astringence, coldness, exactingness, exactness, formality, formalness,
gravity, grimness, hardness, harshness, inclemency, inflexibility, obduracy, rigidity,
rigor,
seriousness, solemnity, sternness, stiffness, strictness, stringency
Antonime: blandness,
calmness, gentility, meekness, mildness