נִקָּיוֹןniqqâyôwn

נִקָּיוֺן: innocency

Pronunciation: nik-kaw-yone' · Hebrew/Aramaic (Old Testament) · H5356

Meanings

1. freedom from guilt, innocency (Genesis 20:5; Psalms 26:6; Psalms 73:13)

2. freedom from punishment (Hosea 8:5)

3. in physical sense (Amos 4:6)

קֵהָיוֺן: bluntness, read perhaps construct קִהְיוֺן (Amos 4:6)

Same root

נָקָהnâqâh · H5352to be (or make) clean (literally or figuratively); by implication (in an adverse sense) to be bare, i.e. extirpated

Where it appears

Appears 5 times in the Bible.

Genesis 20:5 Didn’t Abraham tell me, ‘She is my sister’? And she herself said, ‘Yes, he is my brother.’ I acted in complete innocence! My hands are clean.”
Psalms 26:6 I wash my hands to declare my innocence. I come to your altar, O Lord,
Psalms 73:13 Did I keep my heart pure for nothing? Did I keep myself innocent for no reason?
Hosea 8:5 “O Samaria, I reject this calf— this idol you have made. My fury burns against you. How long will you be incapable of innocence?
Amos 4:6 “I brought hunger to every city and famine to every town. But still you would not return to me,” says the Lord.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).