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How to say "Certainly" in Japanese

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

Japanese Option A

必ず

かならず (kanarazu)
A2 / CEFR Syllabus
VS
Japanese Option B

聢と

聢と(しかと)
C2PLUS / CEFR Syllabus

Nuance Contrast & Translation Difference

When translating "certainly" into Japanese, you must choose carefully between 必ず and 聢と. In Japanese, 必ず (かならず (kanarazu)) is typically associated with "certainly, without fail" (Syllabus Level: A2) and represents Essential structural term in CEFR A2 vocabulary syllabus.. On the other hand, 聢と (聢と(しかと)) maps to "certainly; firmly; clearly; for sure (classical adverb)" (Syllabus Level: C2PLUS) and represents Essential structural term in CEFR C2PLUS vocabulary syllabus.. A literal translation of "certainly" can often sound unnatural to native Japanese speakers if mixed up!
Bilingual Context for "必ず"
私は必ずに興味があります。
I am interested in certainly, without fail.
Bilingual Context for "聢と"
私は聢とに興味があります。
I am interested in certainly; firmly; clearly; for sure (classical adverb).

Nuance Mastery Quiz

Which Japanese word perfectly fits this blank space?

Fill in the blank: "私は ___ に興味があります。" (Meaning: "I am interested in certainly, without fail.")
🎉 Correct Answer!

Remember: "必ず" fits here because it means "certainly, without fail" in the context of: "I am interested in certainly, without fail.". "聢と" represents "certainly; firmly; clearly; for sure (classical adverb)".

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