1.
no doubt, must be, certainly
Expresses strong certainty or conviction that something is true.
GRAMMAR PATTERN:
〜に違いない = must be ~, no doubt ~
Used after:
SIMILAR EXPRESSIONS (certainty levels):
- 〜に違いない (must be - strong certainty)
- 〜はずだ (should be - expectation based on reason)
- 〜かもしれない (might be - possibility)
- 〜だろう (probably - conjecture)
NOTE:
違いない expresses the speaker's strong conviction, often based on evidence or reasoning.