See more synonyms for flag-waver on Thesaurus.com
  1. a person who signals by waving a flag.
  2. an enthusiastic, demonstrative patriot.
  3. a song or musical number intended to arouse patriotic fervor.

Origin of flag-waver

First recorded in 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018