Translation guide
The English adjective "simple-minded" can describe a person who is naive, lacks intelligence, or has a straightforward, uncomplicated way of thinking. The appropriate Japanese expression depends heavily on the intended nuance and context.
Describing someone who is too trusting, innocent, or easily deceived.
Means 'pure' or 'innocent'. Often used positively to describe someone untainted by the world, but can imply naivety.
彼は純粋すぎて、すぐに人を信じてしまう。
He's so simple-minded that he trusts people right away.
Means 'innocent' or 'childlike'. Often used for someone who is simple and free from malice, but can be seen as naive.
彼女の無邪気な質問に、みんな笑った。
Everyone laughed at her simple-minded question.
Refers to a person who is overly kind and easily taken advantage of; a soft touch or pushover.
彼はお人好しだから、騙されやすい。
He's so simple-minded that he's easily fooled.
Literally 'ignorant of the world'. Describes someone naive about how society works.
彼は世間知らずで、何でも信じてしまう。
He's simple-minded and believes everything.
Describing someone who is not very bright or mentally sharp.
Means 'foolish' or 'stupid'. A direct and somewhat strong word for lacking intelligence.
そんな簡単なこともわからないなんて、愚かだ。
It's simple-minded not to understand something so easy.
Literally 'bad head', meaning unintelligent or slow. Colloquial and direct.
彼は頭が悪いから、説明しても無駄だ。
He's so simple-minded that explaining is pointless.
Means 'dull' or 'slow', often used for mental slowness.
Means 'stupid' or 'dim-witted', often with a nuance of being clumsy or foolish. Can be insulting.
Describing a person or approach that is simple and without complexity, sometimes positively.
Means 'simple' or 'simplistic'. Can describe a person who thinks in a straightforward, uncomplicated way, or an idea that is overly simplified.
彼は単純な考え方をする。
He has a simple-minded way of thinking.
Means 'simple and naive' or 'artless'. Often used positively for someone with an unpretentious, natural simplicity.
Describes someone who is single-minded and straightforward, often with a sense of earnestness.
Directly translating 'simple-minded' as シンプルマインド or 簡単な心 does not convey the intended meaning and sounds unnatural. Choose a Japanese word that matches the specific nuance.
純粋 (junsui) emphasizes purity and innocence, often positive. 単純 (tanjun) emphasizes simplicity and lack of complexity, which can be neutral or slightly negative when referring to a person's thinking.
He's so simple-minded that jokes don't get through to him.
With a simple-minded look, he doesn't understand anything.
I like her simple-minded personality.
彼は一本気で、裏表がない。
He's simple-minded and has no hidden side.