revanchism UK /ɹɪˈvæn(t)ʃɪz(ə)m/US /ɹəˈvɑnt͡ʃɪz(ə)m/ noun2 •The political policy of endeavouring to regain lost territory.Fleury had correctly grasped the wisdom of forestalling possible Austrian revanchisme over Lorraine, while France's biggest international problems emanated from England […] — 2002 •Metaphorical endeavouring to regain lost political or cultural territory. formsrevanchisms