tireless   (TTS Sound)

The adj tireless has 2 senses

• indefatigable, tireless, unflagging, unwearying -- (showing sustained enthusiastic action with unflagging vitality; "an indefatigable advocate of equal rights"; "a tireless worker"; "unflagging pursuit of excellence")


• hardworking, industrious, tireless, untiring -- (characterized by hard work and perseverance)