Sailors genuinely take in directions, obscurely (10)

I believe the answer is:

abstrusely

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'obscurely' is the definition.
Both the answer and definition are adverbs. Maybe there's a link between them I don't understand?

'sailors genuinely take in directions' is the wordplay.
'sailors' becomes 'abs' (AB is short for able seaman).
'genuinely' becomes 'truly' (I've seen this before).
'take' is an insertion indicator.
'in directions' becomes 'se' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'truly' going around 'se' is 'trusely'.
'abs'+'trusely'='ABSTRUSELY'

Can you help me to learn more?

I've seen this clue in The Times.

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