(adj) marked by extreme intensity of emotions or convictions; inclined to react violently; fervid, Syn. vehement, trigger-happy, tearing, violent, Example:fierce loyalty; in a tearing rage; vehement dislike; violent passions
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
a. [ L. vehemens, the first part of which is perhaps akin to vehere to carry, and the second mens mind: cf. F. véhément. Cf. Vehicle, and Mental. ] [ 1913 Webster ]
1. Acting with great force; furious; violent; impetuous; forcible; mighty; as, a vehement wind; a vehement torrent; a vehement fire or heat. [ 1913 Webster ]
2. Very ardent; very eager or urgent; very fervent; passionate; as, a vehement affection or passion. “Vehement instigation.” Shak. “Vehement desire.” Milton. [ 1913 Webster ]