An extreme dislike or fear of France, French people, or French culture.
From Gallo- (relating to France) plus -phobia (from Greek phobos meaning 'fear'), following the standard pattern for naming irrational fears.
After the French Revolution, British newspapers stirred up gallophobia by publishing ridiculous cartoons of French people eating frogs—and this propaganda actually worked to make the British public hate their neighbors more intensely.
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