Vehement, a.
Etymology: [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.]
1. Acting with great force; furious; violent; impetuous; forcible; mighty; as, vehement wind; a vehement torrent; a vehement fire or heat.
2. Very ardent; very eager or urgent; very fervent; passionate; as, a vehement affection or passion. "Vehement instigation." Shak. "Vehement desire." Milton.
Syn. -- Furious; violent; raging; impetuous; passionate; ardent; eager; hot; fervid; burning.
Shades of meaning
Fernald has no entry of its own for vehement; he lists it under eager.
He lists it without comment; the entries above explain its neighbors.