noun
1. a communist sympathizer (but not a member of the Communist Party)
• Syn: ↑fellow traveller
• Hypernyms: ↑sympathizer, ↑sympathiser, ↑well-wisher
2. a traveler who accompanies you
• Syn: ↑companion, ↑fellow traveller
* * *
(US) (or Brit fellow traveller) noun, pl ⋯ -ers [count]
I struck up a conversation with one of my fellow travelers.
2 : 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
He was not a member of the Communist Party or even a fellow traveler.
Useful english dictionary. 2012.