'sink back' definitions:
Synonyms of 'sink back'
From: Moby Thesaurus
- backslide,
- fall,
- fall again into,
- fall back,
- fall from grace,
- have a relapse,
- lapse,
- lapse back,
- recidivate,
- recur to,
- regress,
- relapse,
- return to,
- revert,
- revert to,
- slide back,
- slip back,
- yield again to