禍根を絶つ

かこんをたつ

to strike at the root of an evil

禍根を残す

かこんをのこす

to create a breeding ground for future problems, to turn a blind eye to future trouble, to allow for something to come back and bite one in the ass (in the future)

禍

まが わざわい

wickedness, evil, calamity, disaster

禍禍しい

まがまがしい

ominous, sinister, unlucky, ill-omened

奇禍

unforeseen misfortune

白禍

はっか しろか

White Peril (i.e. takeover by white race(s))

筆禍

ひっか

troubles brought on by what one has written

黄禍

こうか

Yellow Peril

兵禍

へいか

ravages of war

患禍

かんか

disaster; calamity; trouble

コロナ禍

コロナか

COVID-19 pandemic; coronavirus crisis; COVID-19 crisis

赤禍

せっか

the Red Peril

舌禍

ぜっか

slip of tongue

惨禍

さんか

calamity

禍源

かげん わざわいげん

source of misfortune

輪禍

りんか

traffic accident, automobile accident

災禍

さいか

accident, calamity, mistake, catastrophe

禍因

かいん わざわいいん

cause of trouble

禍害

かがい

evil, harm, mischief