unflagging

/ʌnˈflæɡɪŋ/
adjective
  1. Continuing without becoming weaker or less energetic; tireless.
    • Despite the long hours, his unflagging energy kept everyone motivated.
    • The volunteers showed unflagging commitment to helping the community.
    • Her unflagging dedication to the project inspired the whole team.
What does "unflagging" mean? | whatsthatwordmean | whatsthatwordmean