けが
kegasu

Godan Verb (su)

1. to pollute; to contaminate; to soil; to make dirty; to stain

Transitive
そのほんよごさないようにあつかってくれるなら、貸してあげるよ。
sono hon'o yogosanai yōni atsukatte kurerunara kashite ageruyo.
You may borrow this book as long as you keep it clean.
Godan Verb (su)

2. to disgrace; to dishonour; to dishonor; to defile

Transitive
あんな行動こうどうかれ体面たいめんよごすものだ。
anna kōdōwa kareno taimen'o kegasu monoda.
Such behavior is beneath his dignity.
Other forms: