zeal

Meaning

Noun

• The fervour or tireless devotion for a person, cause, or ideal and determination in its furtherance; diligent enthusiasm; powerful interest.
• A person who exhibits such fervour or tireless devotion.

Origin

• From Middle English zele, from Old French zel, from Late Latin zēlus, from Ancient Greek ζῆλος ("zeal, jealousy"), from Proto-Indo-European *yeh₂-. Related to jealous.