原本|げんぽんgenpon[1]atamadaka (head-high)

1. nounoriginal (document, copy, work, text, etc.)
   その写うつしは原本げんぽんと合あっている。↗

   The copy agrees with the original.
2. nounroot; origin; source

• Synonym原書げんしょWrittenWritten/formal prose. An original book, especially one in a foreign language, as in 「原書で読む」; 「原本」 is the original of a document or text and is not limited to books.
• SynonymオリジナルNeutralNeutral loanword for original works, stressing originality, as in 「オリジナル商品」; 「原本」 is the original copy of a document or text.
• Related原版げんぱんWrittenWritten/formal prose. The original plate or first edition used as the basis for printing; 「原本」 denotes the original document or text itself.
• Related原型げんけいNeutralNeutral. The original form or model something is based on, also a sewing pattern; 「原本」 is the original copy of a document or text.
• Related原物げんぶつWrittenWritten/formal prose. The original physical object itself rather than a document; 「原本」 is typically the original of a document or book.
• RelatedプロトタイプNeutralNeutral loanword for a prototype, stressing the trial product made at the development stage; 「原本」 is the original copy of a document or text.
• Antonym写本しゃほんWrittenWritten/formal prose. A hand-copied manuscript of a book, the opposite of 「原本」 as the original.
• Antonym写しうつしCasualColloquial and common in speech. A copy or duplicate of a document, the opposite of 「原本」 as the original.
• Antonym複製ふくせいWrittenWritten/formal prose. A reproduction or duplication of an original, the opposite of 「原本」 as the original.

Use 「原本」 for the original of a document or book, as in 「契約書の原本」; it can also mean the root or source of something. For a book in its original foreign language use 「原書」, for original creative works 「オリジナル」, and for an original model 「原型」. The opposites are 「写し」, 「複製」 and 「写本」.

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

1. 物事ものごとの大本おおもと。
2. もとの書物しょもつ。