N-UNCOUNT
變卦；倒退；故態(tài)復萌
If you accuse someone of backsliding, you disapprove of them because they have failed to do something they promised or agreed to do, or have started again doing something undesirable that they had previously stopped doing.
例句
...the government's backsliding on free market reforms...
政府在自由市場改革上的退縮
This may help to maintain the gains you've made and to prevent backsliding.
這或許有助于保持你所取得的進展，防止倒退。