Crossword Genius

Not easy to make out relative by a river (7)

Ross

I believe the answer is:

unclear

'not easy to make out' is the definition.
(something unclear is hard to make out)

'relative by a river' is the wordplay.
'relative' becomes 'uncle' (uncle is a kind of relative).
'by' means one lot of letters go next to another.
'river' becomes 'r' (abbreviation for river).
'uncle'+'a'+'r'='UNCLEAR'

(Other definitions for unclear that I've seen before include "Ambiguous" , "Not apparent" , "Not certain" , "Indistinct" , "Not definite" .)

I've seen this clue in The Times.
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