Dictionary.com
Thesaurus.com
Showing results for overzealous. Search instead for Over zealous.
Synonyms

overzealous

American  
[oh-ver-zel-uhs] / ˈoʊ vərˈzɛl əs /

adjective

  1. too zealous.

    overzealous for reform.


overzealous British  
/ ˌəʊvəˈzɛləs /

adjective

  1. excessively zealous

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of overzealous

First recorded in 1625–35; over- + zealous

Explanation

Overzealous describes someone who gets too excited about something, like your mom, the overzealous collector of cute kitten figurines that now fill every table and shelf in the house. If you're overzealous about something, you've gone too far, and you're probably starting to scare people. Parents who are overzealous about keeping their kids safe may not allow them out of the house — ever. If you are overzealous about conserving water, you might shower a little too infrequently, or scold people for washing their cars. Most people understand that you mean well, and that's why you are so intense.

Keep Reading on Vocabulary.com

Vocabulary lists containing overzealous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Times and the Pentagon Press Association have said the government’s moves are overzealous and retaliatory.

From The Wall Street Journal • Apr. 10, 2026

They’re overzealous because the law is very clear that oversight of these markets is the exclusive province of the federal government.

From Barron's • Mar. 28, 2026

And we can thank the overzealous adoption of A.I. for that.

From Slate • Oct. 17, 2025

In the tribal world of K-Pop, such cases are surprisingly common, as overzealous fans attempt to trash their rivals.

From BBC • Sep. 25, 2025

Witch hysteria was spurred by overzealous clerics and simple factors such as envy and ill will among neighbors, but the trials were very real.

From "The Girl Who Drew Butterflies: How Maria Merian's Art Changed Science" by Joyce Sidman