diligently

As adverbs the difference between tirelessly and diligently

is that tirelessly is in a tireless manner; without tiring, flagging, or ceasing while diligently is in a diligent manner, with appropriate effort, carefully.

As adverbs the difference between persistently and diligently

is that persistently is in a persistent manner while diligently is in a diligent manner, with appropriate effort, carefully.

As adverbs the difference between doggedly and diligently

is that doggedly is in a way that is stubbornly persistent while diligently is in a diligent manner, with appropriate effort, carefully.

As adverbs the difference between intentionally and diligently

is that intentionally is in an intentional manner, on purpose while diligently is in a diligent manner, with appropriate effort, carefully.

As adverbs the difference between laboriously and diligently

is that laboriously is with great expenditure of effort, in a manner requiring much labor while diligently is in a diligent manner, with appropriate effort, carefully.

As adverbs the difference between constantly and diligently

is that constantly is (archaic) with steadfastness; with resolve; in loyalty, faithfully while diligently is in a diligent manner, with appropriate effort, carefully.

As adverbs the difference between willingly and diligently

is that willingly is of one’s own free will; freely and spontaneously while diligently is in a diligent manner, with appropriate effort, carefully.

Sedulously is a related term of diligently.

As adverbs the difference between sedulously and diligently

is that sedulously is applying constant and enduring effort to a task or course of action; in a sedulous manner while diligently is in a diligent manner, with appropriate effort, carefully.

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.

As an adverb diligently

is in a diligent manner, with appropriate effort, carefully.

As a verb reviled is

(revile).