主題|しゅだいshudai[0]heiban (flat)

1. nounsubject; theme; motif
   私はこの主題しゅだいに精通せいつうしている。↗

   I am familiar with this subject.

• SynonymテーマNeutralLoanword for the theme of a work or event; the everyday default. 「主題」 is more written and typical of literary criticism.
• SynonymモチーフNeutralLoanword for the inspiration or material behind a work, or a decorative pattern; in music, a short motive. 「主題」 is the central idea.
• Synonym題材だいざいNeutralThe material an artist draws on for a work, as in 「小説の題材」; stresses source material rather than the central idea.
• Synonym画題がだいWrittenFormal written term for the subject or title of a painting; used only of paintings.
• SynonymトピックNeutralLoanword for a topic of conversation or the news; common in speech.
• Synonym話題わだいNeutralThe content of a chat or discussion, as in 「話題を変える」, or something drawing wide attention; 「主題」 is the central idea of a work or argument.
• Synonym題だいNeutralA title or name given to a work, as in 「作文の題」; stresses the title itself rather than the underlying theme.
• Synonym題目だいもくNeutralA title or heading; also an empty slogan, as in 「お題目」, used with irony.
• Synonym課題かだいNeutralA task, assignment, or problem that needs solving; focuses on issues awaiting resolution rather than a work's theme.
• SynonymサブジェクトNeutralLoanword for a theme; also the subject line of an email or a school subject. Leans formal.
• Antonym脇題WrittenWritten word for a secondary or incidental topic, the opposite of the central 「主題」; subtitles are usually called 「副題」.

Use 「主題」 for the central idea of a work or a piece's main melody, as in 「主題歌」. For everyday themes pick 「テーマ」, for creative material 「題材」, for conversation topics 「話題」, for titles 「題」, and for problems to be solved 「課題」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 作品さくひんや議論ぎろんなどの中心ちゅうしんとなる思想しそう。
2. 音楽おんがくの中心ちゅうしんとなる旋律せんりつ。