Translation guide
In Japanese, expressing 'inner thoughts' depends on whether you mean your own private feelings, what you're thinking at the moment, or a character's internal monologue. Direct translation is often unnatural; instead, use phrases for 'what I really think', 'in my mind', or narrative patterns.
Expressing what you really think or feel inside, often contrasted with outward behavior or speech.
Literally 'true sound', this is the standard term for one's real intention or inner feelings, often used in contrast with 建前 (public stance).
I want to hear his true feelings.
To be honest, I'm against that plan.
Means 'in one's heart/mind'. Used to describe what someone is thinking or feeling internally.
Inside, I was crying.
I apologized to him in my mind.
Means 'innermost thoughts' or 'secret feelings'. Slightly more formal than 本音.
Deep down, I was relieved.
Literally 'what (I) am thinking'. A natural way to refer to one's thoughts.
Please tell me honestly what you're thinking.
Describing the voice in one's head, especially in narratives or when talking to oneself.
Literally 'voice of the heart'. Used for inner voice or conscience, common in casual and literary contexts.
A voice inside me said, 'Stop.'
Means 'talking to oneself', often out loud but can refer to inner monologue in casual use.
The standard way to quote one's thoughts. Use after a clause to say 'I think that...'.
I thought, 'It's already late.'
Specifying that something is thought but not spoken.
Referring to a character's internal thoughts in stories, scripts, or subtitles.
The direct translation '内なる考え' is not natural Japanese. Use the phrases above depending on context.
本音 is your true opinion, often hidden in social situations. 内心 is more about secret feelings or what you think deep down, not necessarily an opinion.
I kept my inner thoughts to myself.
She wrote down her inner thoughts in a diary.
He often talks to himself.
Her inner thoughts are conveyed to the reader.