vehement in WordNet English dictionary

1. marked by extreme intensity of emotions or convictions; inclined to react violently; fervid
   "fierce loyalty"; "in a tearing rage"; "vehement dislike"; "violent passions"
   fierce  tearing  vehement  violent  trigger-happy 
   
2. characterized by great force or energy
   "vehement deluges of rain"; "vehement clapping"; "a vehement defense"
   vehement