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.
納得がいく
nattokugaikumake sense, be convincingN2expression
Example sentences2
彼の説明を聞いて、ようやく納得がいく。
kare no setsumei o kiite, youyaku nattoku ga iku.
Hearing his explanation, it finally makes sense to me. neutral
もう少し説明があれば、納得がいくのに。
mou sukoshi setsumei ga areba, nattoku ga iku noni.
If there were a bit more explanation, it would make sense. casual