1. full of, characterized by, or due to zeal; ardently active, devoted, or diligent.Synonyms: enthusiastic, eager, fervid, fervent, intense, passionate, warm.Antonyms: apathetic; lackadaisical.
"polices can be zealous in activities."
"people can be zealous in matters."
"people can be zealous in/at/on gs."
"people can be zealous in undertakingses."
"friends can be zealous in pursuits."
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