May 8, 2026 · 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 …

(Definition of zealous from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of zealous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Apr 29, 2026 · zealous (comparative more zealous or (uncommon, nonstandard) zealouser, superlative most zealous or (uncommon, nonstandard) zealousest) Full of zeal; ardent, fervent; exhibiting …

zealous (ˈzɛləs) adj filled with or inspired by intense enthusiasm or zeal; ardent; fervent ˈzealously adv

ZEALOUS definition: full of, characterized by, or due to zeal; ardently active, devoted, or diligent. See examples of zealous used in a sentence.