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fellow traveler

1 ENTRIES FOUND:
fellow traveler (US) noun
or British fellow traveller
plural fellow travelers
fellow traveler (US)
noun
or British fellow traveller
plural fellow travelers
Britannica Dictionary definition of FELLOW TRAVELER
[count]
: someone who is traveling in the same group or on the same train, airplane, etc., as you
: someone who shares the opinions and beliefs of the people in a group or organization (especially the Communist Party) but does not belong to that group or organization