Unflagging

adj

Definitions

Adjective
  1. 1
    Never tiring or lacking energy; without rest; without slowing.

    "His unflagging efforts have not gone unnoticed."

Adjective
  1. 1
    tireless wordnet
  2. 2
    showing sustained enthusiastic action with unflagging vitality wordnet

Etymology

From un- + flagging.

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