This is the 8837th most frequent Japanese word.
根絶やし
"根絶やし" means "eradication" or "extermination."
Here, '根絶やし' is metaphorically used to suggest doing away with detrimental habits or practices.
健康な生活を送るためには悪い習慣を根絶やしにする必要があります。
To live a healthy life, it is necessary to completely eliminate bad habits.
Here, '根絶やし' (eradicate completely) is used to describe the act of eliminating pests entirely.
この害虫を根絶やしにするために地域全体で取り組んでいます。
Efforts are being made across the region to eradicate this pest.
In this sentence, '根絶やし' refers to the harmful concept of completely removing endangered species.