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Zealous vs. Jealous
Zealous and jealous share not just a rhyme, but an etymology. Both words ultimately come from the Latin zelus “jealousy,” and in the past their meanings were somewhat closer to each other than they are today. In the 16th and 17th centuries, zealous occasionally was used in biblical writing to refer to a quality of apprehensiveness or jealousy of another. By the 18th century, however, it had completely diverged in meaning from jealous, signifying “warmly engaged or ardent on behalf of someone or something.” Today, zealous often carries a connotation of excessive feeling: it typically means “fiercely partisan” or “uncompromisingly enthusiastic.”
Examples of zealous in a Sentence
Lynn Margulis, Curious Minds, (2004) 2005
Sir Thomas was zealous in the pursuit of recusants, not poachers, and was otherwise an amiable man.
—S. Schoenbaum, Shakespeare's Lives, 1991
Zealous in his ministerial labours, blameless in his life and habits, he yet did not appear to enjoy that mental serenity, that inward content, which should be the reward of every sincere Christian and practical philanthropist.
—Charlotte Brontë, Jane Eyre, 1847
He had no cause for self-reproach on the score of neglect, or want of thought, for he had been devoted to her service; and yet a hundred little occasions rose up before him, on which he fancied he might have been more zealous, and more earnest, and wished he had been.
—Charles Dickens, Oliver Twist, 1838
The detective was zealous in her pursuit of the kidnappers.
Billie Melissa, MSNBC Newsweek, 22 May 2025
And yet every spring passionate hockey fans, or zealous NHL front office executives, watch Stanley Cup playoff games with the conviction that this time both the sport and the league is moving up.
—Mac Engel, Fort Worth Star-Telegram, 8 May 2025
Jay lives in Boulder and is a zealous advocate for his clients.
—Jay Kalinski, Orange County Register, 17 Feb. 2025
The group began as zealous jihadis allied with al-Qaeda and the Islamic State (also known as ISIS).
—Jerome Drevon, Foreign Affairs, 11 Apr. 2025
See All Example Sentences for zealous
Cite this Entry
“Zealous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zealous. Accessed 28 May. 2025.
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zealous
adjective
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