Crossword Genius

By oneself (5)

Ross

I believe the answer is:

alone

'by oneself' is the definition.
(being by oneself is being alone)

This is the entire clue.

(Other definitions for alone that I've seen before include "With no one to see" , "without another" , "Without anybody or anything else" , "Singly" , "On one's own" .)

I've seen this clue in the Penny Press, The Mirror and the Sydney Morning Herald.
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