N4 — 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.
約束を守る
yakusokuwomamorukeep a promiseN4expression
Example sentences2
約束を守るよ。
yakusoku o mamoru yo.
I'll keep my promise. casual
彼は約束を守る人です。
kare wa yakusoku o mamoru hito desu.
He's someone who keeps his promises. neutral