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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

  • overzealously adverb
  • overzealousness noun

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.

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

To a modern eye, this might seem overzealous.

From The Wall Street Journal • Jan. 1, 2026

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

From Slate • Oct. 17, 2025

Regular haircuts can help prevent dogs from overheating, but don’t get overzealous.

From Los Angeles Times • Aug. 8, 2024

Both sides came in with guards up; the family thinking Rindlisbacher overzealous.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel