Bad strokes are not pleasant (10)

I believe the answer is:

offputting

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'not pleasant' is the definition.
I can't judge whether this defines the answer.

'bad strokes' is the wordplay.
'bad' becomes 'off' (eg meat that's gone off is bad).
'strokes' becomes 'putting' (I am not sure about this - if you are sure you should believe this answer much more).
'off'+'putting'='OFFPUTTING'

'are' acts as a link.

Can you help me to learn more?

(Other definitions for offputting that I've seen before include "Disconcerting" , "Disappointing" .)

I've seen this clue in The Irish Times.

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