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Definition of overzealous
overzealous
/ˌoʊ.vɚˈzɛl.əs/
o · ver · zeal · ous
Adverb:overzealously
overzealous Lexical Profile
CEFR
C1
Grade
9
Tier
2
Usage
Top 10k
Syllables
4
overzealous Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Excessively or improperly zealous; showing too much enthusiasm, fervor, or eagerness in pursuing an objective.
Example
"The overzealous security guard questioned every visitor at length before allowing them into the building."
Synonyms
View all synonyms for overzealous Antonyms
View all antonyms for overzealous• Rhymes for overzealous
• Nearby Words
Word Origin & Etymology
Formed in English from the prefix 'over-' and 'zealous', which derives via Medieval Latin from Ancient Greek 'zelos' (ardor, eager rivalry).
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Overzealous. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/overzealous