As adverbs the difference between diligently and zealously
is that diligently is in a diligent manner, with appropriate effort, carefully while zealously is like a zealot; with zealotry.
diligently
English
Adverb
(
en adverb)
In a diligent manner, with appropriate effort, carefully.
zealously
English
Adverb
(
en adverb)
Like a zealot; with zealotry.
Synonyms
* (with zealotry) eagerly, enthusiastically, heartily, with a will