noun Etymology: translation of Russian poputchik Date: 1925 a person who sympathizes with and often furthers the ideals and program of an organized group (as the Communist party) without membership in the group or regular participation in its activities, fellow-traveling adjective
FELLOW TRAVELER
Meaning of FELLOW TRAVELER in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012