English translation:
There is no doubt that
I’m sure
Structure:
Noun + に違いない
Verb + に違いない
いAdj + に違いない
なAdj + に違いない
Explanation:
[can exclaim subjective conviction or a firmly held opinion/belief]
Should mention that the formal form of this is に違いありません
What is the difference between に違いない ｖｓ 違いがない