revanchism
The political policy of endeavouring to regain lost territory.
uncountable
Fleury had correctly grasped the wisdom of forestalling possible Austrian revanchisme over Lorraine, while France's biggest international problems emanated from England […]
Metaphorical endeavouring to regain lost political or cultural territory.
uncountable
But Trump, proud son of Queens, believes firmly that stirring up division is essential to his success, and he’s always looking for ways to promote right-wing revanchism and resentment. He’s particularly drawn to symbolic fights where he can take an angry stand against cultural change.
Where it comes from
From the French revanche (“revenge”) + -ism, based on revanchisme. By surface analysis, revanche + -ism. Piecewise doublet of revengism.
Adapted from the Wiktionary entry revanchism (CC BY-SA 4.0).