Crossword Genius

Acid oddly cold for sun treatment (8)


I believe the answer is:

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

'acid' is the definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?

'oddly cold for sun treatment' is the wordplay.
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
'treatment' indicates anagramming the letters.
The alternate letters of 'cold' are 'cl'.
'clforsun' with letters rearranged gives 'SCORNFUL'.

Can you help me to learn more?

(Other definitions for scornful that I've seen before include "Disdainful, contemptuous", "Openly contemptuous", "sneering?", "Showing contempt for", "Contemptuous or derisory".)

I've seen this clue in Sydney Morning Herald.