ADJ-GRADED
（尤指對政治或宗教理想）熱情的，充滿激情的，狂熱的
Someone who is zealous spends a lot of time or energy in supporting something that they believe in very strongly, especially a political or religious ideal.
例句
She was a zealous worker for charitable bodies...
她對慈善事業充滿熱忱。
He was a recent Catholic convert, and very zealous.
他最近才皈依天主教，是一名狂熱的信徒。