noun
small kindness; minor good deed
Refers to a modest act of kindness or a small moral deed, often contrasted with larger virtuous acts. Somewhat literary or formal.
日々の小善を積み重ねることが大切だ。
It is important to accumulate small good deeds every day.
彼は小善を笑うが、大きな善行もできない。
He laughs at small kindnesses, yet he cannot perform great good deeds either.