adj ·3 syllables ·Moderate ·College level

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

Synonyms

All synonyms

constantindefatigableinexhaustibleardentassiduouscontinuing

Example

More examples

"His unflagging efforts have not gone unnoticed."

Etymology

From un- + flagging.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.