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"roamer" is also used as a crossword clue. If that's what you saw, the answer is often wanderer (8 letters).
Definitions
someone who leads a wandering unsettled life
Word origin
From roam + -er.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Restless wanderer”6 letters
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