Crossword Genius

Arduous journey (4)

Ross

I believe the answer is:

trek

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">arduous journey</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for trek that I've seen before include "Long hike" , "Long hard journey on foot" , "A long arduous walk" , "Long walk in the mountains?" , "Long and difficult trip" .)

I've seen this clue in the USA Today, the King Feature Syndicate, the LA Times, The Wall Street Journal, The Guardian, The Telegraph, the Universal, the Newsday and The New York Times.
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