Where does “flag-waver” come from?

flag-waver (English) comes from English flag, from English flack, from Middle English flacken, from German flackern, from Middle High German vlackern, from Proto-Germanic flakuraz, from Proto-Indo-European plāg-, from Proto-Indo-European pelə- — to wander; to fill.

flag-waver (English): A highly vocal and visible supporter of a cause

Definitions

  1. A highly vocal and visible supporter of a cause

Ancestry of “flag-waver”, step by step

flag-waver traces back through two separate lines of ancestry.

via English flag

StepLanguageWordMeaning
1EnglishflagA piece of cloth, often decorated with an emblem,...
2EnglishflackTo flutter; palpitate; To hang loosely; flag; To...
3Middle Englishflackento palpitate, flutter; to move to and fro,...
4Germanflackernto flicker
5Middle High Germanvlackern
6Proto-Germanicflakurazshaking, wavering
7Proto-Indo-Europeanplāg-
8Proto-Indo-Europeanpelə-to wander; to fill

via English waver

StepLanguageWordMeaning
1EnglishwaverTo sway back and forth; to totter or reel; To...
2EnglishwaveTo move back and forth repeatedly and somewhat...
3Middle EnglishwaweA wave; Any sort of flowing or spurting motion;...
4Old Englishwǣġa weight; a tool for weighing, balance, scale
5Proto-Germanicwēgazwave; sea
6Proto-Indo-Europeanweǵʰ-to bring; to transport
Every word from Proto-Indo-European pelə-