also: ナイーヴ
naive; innocent; unpretentious
Describes a person or attitude that is innocent, straightforward, and sometimes overly trusting or lacking worldly experience. Can carry a slightly positive or negative nuance depending on context.
from English naive
彼女はとてもナイーブで、人の言うことをすぐ信じてしまう。
She is very naive and quickly believes what people say.
彼のナイーブな考え方には驚かされる。
I'm surprised by his naive way of thinking.
He's a naive young man who quickly believes what others say.
She's so sensitive that even mild criticism deeply hurts her.
Because of his sensitive nature, it took him a long time to get over the breakup.
He naively believed the story.