N2 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ/です, so there are no forms to conjugate.
間違いない
machigainaithere's no doubt about itN2expression
Example sentences2
彼が犯人であることは間違いない。
kare ga hannin de aru koto wa machigainai.
There's no doubt that he is the culprit. neutral
これ、絶対おいしいやつだ、間違いない。
kore, zettai oishii yatsu da, machigainai.
This is definitely going to be delicious, no doubt about it. casual