What does "tirelessly" mean?

In a tireless manner; without tiring, flagging, or ceasing.

Tirelessly

Common synonyms include: indefatigably, ceaselessly, diligently, doggedly, energetically, faithfully.

adv

adv ·3 syllables ·Rare ·Advanced level

Adverb

1
In a tireless manner; without tiring, flagging, or ceasing.
"The volunteers worked tirelessly to improve the content."

Adverb

"Scarcely had her mother left when Mary took control of the house and tirelessly harassed her little brother Tom."

From tireless + -ly.