[syn: hardworking, industrious, tireless, untiring]
The Collaborative International Dictionary of English v.0.48:
Tireless \Tire"less\, a.
Untiring.
[1913 Webster]
WordNet (r) 3.0 (2006):
tireless
adj 1: showing sustained enthusiastic action with unflagging
vitality; "an indefatigable advocate of equal rights"; "a
tireless worker"; "unflagging pursuit of excellence"
[syn: indefatigable, tireless, unflagging,
unwearying]
2: characterized by hard work and perseverance [syn:
hardworking, industrious, tireless, untiring]