Vestige
vestige /ˈvɛstɪʤ/ noun [count] formal
1 : the last small part that remains of something that existed before : Trace — + of
- a vestige of an ancient tradition
- He is still clinging to the last vestiges of his power.
2 : the smallest possible amount of something — + of — usually used in negative statements
- There’s not a vestige of doubt that what she says is true.