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How to say "Be" in Japanese

Both words can translate to "be", but which should you choose?

Japanese Option A

足りる

たりる (tariru)
N4 / CEFR Syllabus
VS
Japanese Option B

思い込む

おもいこむ (omoikomu)
N3 / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "be" into Japanese, you must choose carefully between 足りる and 思い込む. In Japanese, 足りる (たりる (tariru)) is typically associated with "to be enough; to be sufficient" (Syllabus Level: N4) and represents Intransitive verb. Indicates that a quantity, amount, or ability is adequate for a specific purpose. 必要な量や能力が十分にあることを示します。. On the other hand, 思い込む (おもいこむ (omoikomu)) maps to "to be under the impression that, to be convinced that, to be deluded into thinking" (Syllabus Level: N3) and represents To firmly believe something, often mistakenly, or to become deeply convinced of a belief. It implies a strong, sometimes incorrect, conviction.. A literal translation of "be" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "足りる"
時間がないから、これで足りるでしょう。
There's no time, so this should be enough.
Bilingual Context for "思い込む"
彼は自分が天才だと思い込んでいる。
He is convinced that he is a genius.

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "時間がないから、これで ___ でしょう。" (Meaning: "There's no time, so this should be enough.")
🎉 Correct Answer!

Remember: "足りる" fits here because it means "to be enough; to be sufficient" in the context of: "There's no time, so this should be enough.". "思い込む" represents "to be under the impression that, to be convinced that, to be deluded into thinking".

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