whittle away
US /ˈwɪt.əl əˈweɪ/
UK /ˈwɪt.əl əˈweɪ/

1.
erodere, ridurre gradualmente
to reduce something in size, amount, or importance gradually
:
•
The constant criticism began to whittle away at her confidence.
Le continue critiche iniziarono a erodere la sua fiducia.
•
They are trying to whittle away at our rights.
Stanno cercando di ridurre i nostri diritti.