Synonyms of the word

tireless

• adj. Indefatigable, untiring and not yielding to fatigue.
• adj. Without a tire (wheel covering); tyreless.

diligent

• adj. Performing with intense concentration, focus, responsible regard.

energetic

• adj. Possessing, exerting, or displaying energy.
• adj. Of or relating to energy.

hardworking

• adj. Of a person, taking their work seriously and doing it well and rapidly.

indefatigable

• adj. Extremely persistent and untiring.

industrious

• adj. Hard-working and persistent.

unflagging

• adj. Never tiring or lacking energy; without rest; without slowing.

untiring

• adj. Not able to be tired; inexhaustible.
• adj. Unfailing; resolute.

unwearying

• adj. Untiring; not becoming tired.