interponer
/inteɾpoˈneɾ/ · B2 · verb
to interpose
⚖️ inter- (between) + poner (to put) = to put yourself between, then file a claim
Inter- means between and poner means to put. To interpose is literally to put something between parties. Legally, you put an appeal or complaint between yourself and the court's decision: interponer un recurso means to lodge an appeal.