悪さ
わ
る
さ
Meanings
1
badness; poor quality; how bad something is
A noun expressing the bad or poor quality of something, often used with の or に to point to what is unsatisfactory.
This hotel has a good location, but the poor service stands out.
I am having trouble with the poor signal.
2
mischief; naughty act; mean trick
Common in the pattern 悪さをする, meaning to do something naughty, mischievous, or deliberately troublesome. Often used for children, animals, or minor wrongdoing.
The children got up to mischief in the garden and trampled the flowers.
While we were out, the cat got into mischief in the kitchen.
Usage patterns
- 〈物〉の悪さthe poorness/badness of something's quality
I was surprised at how bad the food tasted.
- 悪さをするto do something mischievous or naughty
The child got scolded by the teacher for misbehaving.
- 〈人〉に悪さを働くto do something harmful or mean to someone
The delinquents did something harmful to the neighbors.