regress
US
UK regress vi: (revert to previous state)
SC 退步 tuì bù
SC 退化 tuì bù，tuì huà
TC 退化
TC 退化
SC 复原 tuì bù，fù yuán
The patient made progress, but then regressed.
regress n: (backward movement)
SC 倒退 dào tuì
TC 倒退
TC 倒退
SC 回归 dào tuì，huí guī
regress n: (philosophy: circularity) (哲学)
SC 回溯 huí sù