Meaning of なっとく in Japanese

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Definition of なっとく

なっとく(nattoku) 【納得】

なっとくずく(nattokuzuku) · なっとくづく(nattokuzuku) 【納得ずく ·納得尽く ·納得づく】

(n) having consent (e.g. to do something); having (someone's) assent →Related words: 納得
けい子と一朗が納得ずくで別れた。
Keiko and Ichiro parted with mutual consent.

なっとくがいく(nattokugaiku) 【納得がいく ·納得が行く】

(exp, v5k-s) to understand and accept as valid (of a thought, action, etc.); to be satisfied with