A political term introduced by U.S. President Barack Obama during his 2012 presidential campaign to characterise his Republican opponent Mitt Romney for changing his positions and trying to pivot to the political center. The term is a portmanteau combining the last name of the Republican nominee with amnesia to suggest a condition of selective memory loss of prior policy stances.

Before nearly 10,000 supporters at a Virginia rally, Obama claimed: "Mr. Severely Conservative wants you to think he was severely kidding about everything he said over the last year." Obama then declared: "He's forgetting what his own positions are, and he's betting that you will, too. I mean, he's changing up so much and backtracking and sidestepping. We've got to — we've got to — we've got to name this condition that he's going through. I think — I think it's called 'romnesia'."