kun-tǐ根治

to bring under permanent control

to bring under permanent control; to effect a radical cure; to cure once and for all; to eradicate

English Wiktionary, “根治” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E6%A0%B9%E6%B2%BB · confidence: Medium (Wiktionary, Hokkien)