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adjective

zealous

/ˈzɛləs/  ·  say it: ZEL·us

showing great energy and enthusiasm

In Sophisticated Everyday

fervently devoted to a cause

In Personality & Character

In more detail

1. (adjective) having or showing great enthusiasm and dedication to a cause or activity

2. (adjective) eager and willing to work hard for something you believe in

Examples

How to use zealous

Zealous describes intense enthusiasm and commitment, often with a positive connotation of determination and hard work. It differs from passionate by emphasizing active dedication and tireless effort rather than just emotional intensity. The word can occasionally carry a slightly cautionary tone when the commitment borders on excessive or narrow-minded.

Register: formal

Common phrases

Synonyms

enthusiastic · passionate · committed · dedicated · fervent

Opposites

apathetic · indifferent · unenthusiastic

Word family

zealously (adverb) · zealotry (noun) · zealot (noun)

A common mistake

Learners sometimes confuse zealous with jealous, which is a completely different word meaning envious or possessive.

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