enter SUFFIX
-ingly;
ferventer ADV POS
ferveo, fervere, ferbui, - V (2nd) INTRANS [XXXAO]
be (very) hot; boil/burn; seethe/surge; swarm; be turbulent/run strongly; froth
be warm/aroused/inflamed/feverish, reek (w/blood); be active/busy/agitated;
fervo, fervere, fervi, - V (3rd) INTRANS [XXXAO]
be (very) hot; boil/burn; seethe/surge; swarm; be turbulent/run strongly; froth
be warm/aroused/inflamed/feverish, reek (w/blood); be active/busy/agitated;
er SUFFIX
-ly;
ferventer ADV POS
fervens, (gen.), ferventis ADJ [XXXDX] lesser
red hot, boiling hot; burning; inflamed, impetuous; fervent/zealous (Bee);

Credits:
This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.