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.
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.
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.
He's so simple-minded that he's easily fooled.
Literally 'ignorant of the world'. Describes someone naive about how society works.
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.
It's simple-minded not to understand something so easy.
Literally 'bad head', meaning unintelligent or slow. Colloquial and direct.
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.
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 explaining is pointless.
彼は鈍いから、冗談が通じない。
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.
He's simple-minded and has no hidden side.