The sheer joy of being Turkish? (7)

I believe the answer is:

delight

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

'the sheer joy' is the definition.
'delight' can be an answer for 'joy' (synonyms). I'm unsure of the 'the sheer' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for delight that I've seen before include "Elation" , "Captivate" , "Ecstasy" , "Felicity" , "Extreme satisfaction" .)

I've seen this clue in the Evening Standard.

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