English

Adjective

unflagging ‎(comparative more unflagging, superlative most unflagging)

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

   His unflagging efforts have not gone unnoticed.

   • 2008, Karlyn Kohrs Campbell; Susan Schultz Huxman, The Rhetorical Act: Thinking, Speaking and Writing Critically‎, page 265:

     The 2001 photo was strangely and powerfully similar to the World War II flag raising because both photos captured a heroic deed of courage, grit, teamwork, and unflagging patriotism at a historic moment marked by the darkness of the threat against us.

Translations

Synonyms

• inexhaustible, tireless, untiring, unwearying, indefatigable