モガモガFreq.FrequencyTop 100,000Meanings1nounmodern girl; flapperabbreviationslang›dated term1920s slang for a fashionable, Westernized young woman in Japan; abbreviation of モダンガール. Dated term, now used only in historical contexts.See also: モダンガール大たい正しょう時じ代だい、銀ぎん座ざには多おおくのモガがいた。In the Taisho era, there were many modern girls in Ginza.