פְּתִיpᵉthîy

פֶּ֫תִי: simple, possibly as open-minded, open to the instruction of wisdom or folly (Proverbs 9:4; Psalms 19:8; Psalms 116:6; Psalms 119:130; Proverbs 22:3)

Pronunciation: peth-ee' · Hebrew/Aramaic (Old Testament) · H6612

Meanings

פְּתִי: simplicity, (i.e.lack of wisdom) (Proverbs 1:22)

Same root

פָּתָהpâthâh · H6601to open, i.e. be (causatively, make) roomy; usually figuratively (in a mental or moral sense) to be (causatively, make) simple or (in a sinister way) delude
פְּתַיּוּתpᵉthayûwth · H6615silliness (i.e. seducibility)

Where it appears

Appears 19 times in the Bible.

Psalms 19:7 The instructions of the Lord are perfect, reviving the soul. The decrees of the Lord are trustworthy, making wise the simple.
Psalms 116:6 The Lord protects those of childlike faith; I was facing death, and he saved me.
Psalms 119:130 The teaching of your word gives light, so even the simple can understand.
Proverbs 1:4 These proverbs will give insight to the simple, knowledge and discernment to the young.
Proverbs 1:22 “How long, you simpletons, will you insist on being simpleminded? How long will you mockers relish your mocking? How long will you fools hate knowledge?
Proverbs 1:32 For simpletons turn away from me—to death. Fools are destroyed by their own complacency.

See every passage

Psalms 19:7, 116:6, 119:130
Proverbs 1:4, 1:22, 1:32, 7:7, 8:5, 9:4, 9:6, 9:16, 14:15, 14:18, 19:25, 21:11, 22:3, 27:12
Ezekiel 45:20

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).