Rational converse? (9)

I believe the answer is:

emotional

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'rational converse?' is the definition.
Both the definition and answer are adjectives. Maybe you can see an association between them that I don't see?

This is the entire clue.

Can you help me to learn more?

(Other definitions for emotional that I've seen before include "Dramatic" , "Arousing strong feelings" , "Arousing intense feeling" , "Moving" , "Poignant" .)

I've seen this clue in The Guardian and The Globe and Mail.

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