Synonym Nuance VS
How to say "One" in Japanese
Both words can translate to "one", but which should you choose?
Japanese Option A
一
いち (ichi)
N5 / 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 一 and 異口同音.
In Japanese, 一 (いち (ichi)) is typically associated with "one" (Syllabus Level: N5) and represents 数を数えるときに使います。ひとつ、一人、一日など、他の言葉と組み合わせて使われることも多いです。/ Used for counting. Often combined with other words like 'hitotsu'.
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 "一"
りんごが一つあります。
There is one apple.
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: "りんごが ＿＿＿ つあります。" (Meaning: "There is one apple.")
🎉 Correct Answer!
Remember: "一" fits here because it means "one" in the context of: "There is one apple.". "異口同音" represents "(with) one voice; unanimously; to say the same thing".