WordNet 3.0 Copyright © 2006 by Princeton University.
- 1. indefatigable, tireless, unflagging, unwearying, energetic (vs. lethargic)
- usage: showing sustained enthusiastic action with unflagging vitality; "an indefatigable advocate of equal rights"; "a tireless worker"; "unflagging pursuit of excellence"
- 2. hardworking, industrious, tireless, untiring, diligent (vs. negligent)
- usage: characterized by hard work and perseverance
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See also: tireless (Dictionary)