げんぶん原文genbun
1.
The original text that exists before any alterations, translations, or adaptations have been made.
2.
The initial version of a written work, serving as the source for translations, adaptations, or summaries.
3.
The document or passage in its untouched form, distinguished from any modified or reformulated versions.
4.
The foundational manuscript that serves as a reference point for subsequent alterations or interpretations in writing.
Example:
あの翻訳は原文に忠実だそうだ。