swingback

[swing-bak]
noun
  1. (especially in political affairs) a return or reversion, as to previous opinion, custom, or ideology: We must fight any swingback to isolationism.

Origin of swingback

First recorded in 1860–65; noun use of verb phrase swing back
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018