N3 - 納得なっとく
consent, assent, understanding
N2 - 納めるおさめる
to obtain, to reap, to pay, to supply, to accept
N1 - 納まるおさまる
to be obtained, to end, to settle into, to fit into, to be settled, to be paid, to be delivered
N1 - 滞納たいのう
non-payment, default
N1 - 納入のうにゅう
payment, supply