JLPT N2Grammar
～に違いない
must be ~, no doubt that ~, undoubtedly
Advanced
20-30 min
common
Expert Reviewed
Explanation
Expresses strong conviction or certainty based on evidence.
Formation
[Plain form] + に違いない
Examples
彼は知っているに違いない。
Kare wa shitte iru ni chigai nai.
He must know about it.
これは本物に違いありません。
Kore wa honmono ni chigai arimasen.
This is undoubtedly genuine.
Common Mistakes to Avoid
Based on speaker's judgment, not absolute fact.
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