zealous
zea·lous
adjective
1.
marked by active interest and enthusiasm
- “an avid sports fan”
- “a great walker”
- “an eager beaver”
Origin
From Middle English zelose, from Latin zēlōsus, from zēlus + -ōsus, from Ancient Greek ζῆλος (zêlos, “zeal, jealousy”), from ζηλόω (zēlóō, “to emulate, to be jealous”).
Related words
Word family
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.