Shallow
い adjective
This is a single kanji with an い on the end, meaning you know it's probably an adjective. What's the adjective form of shallow? It's shallow.
あさい
The reading is the one you learned with the kanji, making this あさい.
小さい子用の浅いプールもありますよ。
There are also shallow pools for small children.
この川は浅いところと深いところがあるから、気をつけてね。
This river has both shallow and deep areas, so be careful.
考えの浅い人間にはなりたくありません。
I don't want to become a person with shallow thoughts.