Crossword Genius

Contracted constructor will harm (3)

Ross

I believe the answer is:

ill

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

'harm' is the definition.
(I've seen this before)

'contracted constructor will' is the wordplay.
'ILL' is hidden within the letters.
But, I'm uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for ill that I've seen before include "weak" , "Out of sorts" , "In a bad way" , "'Never speak . . . of the dead'" , "Not in good health" .)

I've seen this clue in the Sydney Morning Herald.
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