noun, noun or participle which takes 'suru', transitive verb
extermination; elimination; getting rid of
Broadly used for destroying or removing pests, monsters, enemies, or undesirable things. Often implies active, forceful removal.
ゴキブリを退治するために殺虫剤を買った。
I bought insecticide to exterminate the cockroaches.
桃太郎は鬼を退治しに行った。
Momotarō went to subjugate the ogres.
noun, noun or participle which takes 'suru', transitive verb
curing (an illness); getting rid of (a disease)
Used for eliminating diseases or ailments, often with a nuance of actively fighting them off.
風邪を早く退治するには、よく寝ることだ。
To get rid of a cold quickly, you should get plenty of rest.
noun, noun or participle which takes 'suru', transitive verb
renouncing worldly desires (Buddhism)
Buddhist term: overcoming or subduing worldly passions and desires to focus on practice.
修行者は煩悩を退治するために厳しい修行に励む。
Practitioners engage in rigorous training to renounce worldly desires.