Crossword Genius

Controversial drug and why one does it? (7)

Ross

I believe the answer is:

emotive

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

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

'drug and why one does it?' is the wordplay.
I cannot quite see how this works, but
'drug' could be 'e' (E is another name for ecstasy) and 'e' is found within the answer.
'one' could be 'i' (Roman numeral) and 'i' is located in the answer.
'it?' could be 't' (abbreviation. e.g. in 'tis) and 't' is found in the answer.
The remaining letters 'move' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for emotive that I've seen before include "able to get going" , "arousing passion" , "Stirring feelings" , "Arousing deep feeling" , "Arousing great feeling" .)

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