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.
納得がいかない
nattokugaikanaito be unable to accept somethingN2expression
Example sentences2
その説明には納得がいかないんです。
sono setsumei ni wa nattoku ga ikanai n desu.
I can't accept that explanation. neutral
この結果、どうしても納得がいかない。
kono kekka, dou shitemo nattoku ga ikanai.
I just can't accept this result, no matter what. casual