Example : Ardent love.
An ardent lover.
A fervent desire to change society.
A fervent admirer.
Fiery oratory.
An impassioned appeal.
A torrid love affair.

Synonyms : ardent, fervid, fiery, impassioned, perfervid, torrid

Example : The fervent heat...merely communicated a genial warmth to their half-torpid systems.
Set out...when the fervid heat subsides.

Synonyms : fervid