Zealous
/zˈɛləs/
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Definition
(adj) Full of zeal; ardent, fervent; exhibiting enthusiasm or strong passion, particularly in matters of religion.
Sentence Examples
He is very zealous in his study of English.
He was zealous in satisfying his employer.
CEFR Practice Quiz
The manager was criticized for being a bit too ____ in his efforts to several improve the company performance today.