undermine
Definition
To weaken or damage something gradually, often in a secretive way.
日本語 秘密裏に、あるものを徐々に弱め、損なう
Example
"Constant criticism from her boss began to undermine her confidence."
To weaken or damage something gradually, often in a secretive way.
日本語 秘密裏に、あるものを徐々に弱め、損なう
"Constant criticism from her boss began to undermine her confidence."