יֵצֶרYêtser

proper name, masculine: son of Naphtali (Genesis 46:24; 1 Chronicles 7:13; Numbers 26:49)

Pronunciation: yay-tser · Hebrew/Aramaic (Old Testament) · H3337

Same root

יֵצֶרyêtser · H3336a form; figuratively, conception (i.e. purpose)
יִצְרִיYitsrîy · H3340a Jitsrite (collectively) or descendants of Jetser

Where it appears

Appears 3 times in the Bible.

Genesis 46:24 The sons of Naphtali were Jahzeel, Guni, Jezer, and Shillem.
Numbers 26:49 The Jezerite clan, named after their ancestor Jezer. The Shillemite clan, named after their ancestor Shillem.
1 Chronicles 7:13 The sons of Naphtali were Jahzeel, Guni, Jezer, and Shillem. They were all descendants of Jacob’s concubine Bilhah.

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).