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1.
An American who has been living in another country long enough to understand that/why the people in that country feel antipathy toward Americans, and is modifying their behaviour/educating themselves to overcome those deficiencies.

From the phrase "recovering alcoholic".
No, it's all right, you can invite Crandall to Grandpère's birthday: he's a recovering American.
by Matti! Matti! Matti! January 03, 2011