Crossword Genius

How a wanderer may get out of line (7)

Ross

I believe the answer is:

deviate

I'm a little stuck... Click here to teach me more about this clue!

'out of line' is the definition.
The definition and answer can be both to do with fundamental existence as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?

'how a wanderer' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'wanderer' could be 'i' (where the crossword setter is 'Wanderer') and 'i' is found within the answer.
This explanation may well be incorrect...

'may get' is the link.

Can you help me to learn more?

(Other definitions for deviate that I've seen before include "Change from a course or standard" , "Depart from an established course" , "Turn aside from accepted way" , "Turn aside from course of action" , "Differ" .)

I've seen this clue in the Evening Standard.
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