Strong's #2204: zeo (pronounced dzeh'-o)

a primary verb; to be hot (boil, of liquids; or glow, of solids), i.e. (figuratively) be fervid (earnest):--be fervent.

Thayer's Greek Lexicon:

́

zeō

1) to boil with heat, be hot

1a) used of water

1b) metaphorically

1b1) used of boiling anger, love, zeal, for what is good or bad etc.

1b2) fervent in spirit, said of zeal for what is good

Part of Speech: verb

Relation: a primary verb

Citing in TDNT: 2:875, 296

Usage:

This word is used 2 times:

 

Acts 18:25: "of the Lord; and being fervent in the spirit, he spake and"
Romans 12:11: "Not slothful in business; fervent in spirit; serving the Lord;"