Quadruple VS
Synonym Boundary: "いち", "もういちど", "億", "いちいち"
All represent the core concept "one", but require precise selection.
Japanese Option A
いち
いち (ichi)
N5 / CEFR
Japanese Option B
もういちど
もういちど (mou ichido)
N5 / CEFR
Japanese Option C
億
おく (oku)
N3 / CEFR
Japanese Option D
いちいち
いちいち (ichiichi)
N2 / CEFR
Quadruple VS Nuance Contrast & Social Differences
When expressing "one" in Japanese, you must carefully distinguish between "いち", "もういちど", "億", "いちいち" based on context.
- いち (いち (ichi) - Level: N5): Maps to "one" and is used when Basic number for counting. Can be used as a standalone number or with various counters.
- もういちど (もういちど (mou ichido) - Level: N5): Maps to "One more time; Again" and is used when Used to request repetition or another attempt. Often combined with 「お願いします」.
- 億 (おく (oku) - Level: N3): Maps to "one hundred million (100,000,000)" and is used when A large numerical unit in Japanese. 1億 = 100,000,000. Often used for large amounts of money, population, or astronomical figures..
- いちいち (いちいち (ichiichi) - Level: N2): Maps to "one by one; in detail; item by item; minutely; every single time (often implies annoyance or unnecessary thoroughness)" and is used when Implies going through things individually or paying attention to every small detail. Can convey a sense of annoyance when someone is being excessively meticulous or complaining about every little thing..
Context for "いち"
りんごが一つあります。
There is one apple.
Context for "もういちど"
もう一度言ってください。
Please say it one more time.
Context for "億"
日本の人口は約1億2千万です。
Japan's population is approximately 120 million.
Context for "いちいち"
彼は部下のやることに、いちいち口を出す。
He interferes with every single thing his subordinates do.
Synonym Mastery Challenge
Which Japanese word perfectly fits this blank space?
Fill in the blank: "りんごが一つあります。" (Meaning: "There is one apple.")
🎉 Correct Answer!
Remember: "いち" is correct here because it represents "one" in the context: "There is one apple.".