Crossword Genius

No good ingredient of soilless composts (3)

Ross

I believe the answer is:

ill

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

'no good' is the definition.
Both the answer and definition are adjectives. Maybe you can see an association between them that I don't see?

'ingredient of soilless composts' is the wordplay.
'ingredient of' says the answer is hidden in the clue.
'ILL' can be found hidden inside 'soilless composts'.

Can you help me to learn more?

(Other definitions for ill that I've seen before include "Hardly - sick" , "Not in the pink" , "I will (abbrev.) (1'2)" , "Unwell, sick" , "Ailing" .)

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