shallow; superficial; thoughtless
Describes a person's thinking, plan, or judgment as lacking depth, foresight, or careful consideration. Often carries a negative, critical tone.
I was amazed at his shallow thinking.
そんな浅はかな計画では成功しないだろう。
Such a superficial plan probably won't succeed.
With that kind of shallow thinking, you're going to fail.
His shallow judgment caused great damage to the company.
I now regret having taken such a thoughtless action.
Later, I realized how shallow my thinking had been.