Synonym Nuance VS
How to say "One" in Japanese
Both words can translate to "one", but which should you choose?
Japanese Option A
億
おく (oku)
N3 / CEFR Syllabus
VS
Japanese Option B
異口同音
いくどうおん (ikudouon)
N1 / CEFR Syllabus
Nuance Contrast & Translation Difference
When translating "one" into Japanese, you must choose carefully between 億 and 異口同音.
In Japanese, 億 (おく (oku)) is typically associated with "one hundred million (100,000,000)" (Syllabus Level: N3) and represents A large numerical unit in Japanese. 1億 = 100,000,000. Often used for large amounts of money, population, or astronomical figures..
On the other hand, 異口同音 (いくどうおん (ikudouon)) maps to "(with) one voice; unanimously; to say the same thing" (Syllabus Level: N1) and represents This is a yojijukugo. A literal translation of "one" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "億"
日本の人口は約1億2千万です。
Japan's population is approximately 120 million.
Bilingual Context for "異口同音"
会議の参加者たちは、皆、異口同音に彼の意見に賛成した。
The participants in the meeting all unanimously agreed with his opinion.
Nuance Mastery Quiz
Which Japanese word perfectly fits this blank space?
Fill in the blank: "日本の人口は約1 ＿＿＿ 2千万です。" (Meaning: "Japan's population is approximately 120 million.")
🎉 Correct Answer!
Remember: "億" fits here because it means "one hundred million (100,000,000)" in the context of: "Japan's population is approximately 120 million.". "異口同音" represents "(with) one voice; unanimously; to say the same thing".