View on the river is disgusting (7)
I believe the answer is:
obscene
'is disgusting' is the definition.
(obscene can mean disgusting or indecent)
'view on the river' is the wordplay.
I cannot really understand how this works, but
'view' could be 'scene' (synonyms) and 'scene' is found in the answer.
'river' could be 'ob' (Ob is an example) and 'ob' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for obscene that I've seen before include "coarse!" , "Highly offensive" , "offending sensibilities?" , "unsuitable for children?" , "Offensive - indecent" .)