שָׁכֵחַshâkêach

forgetting, forgetful (Isaiah 65:11; Psalms 9:8; Job 8:13; Psalms 50:22)

Pronunciation: shaw-kay'-akh · Hebrew/Aramaic (Old Testament) · H7913

Same root

שָׁכַחshâkach · H7911to mislay, i.e. to be oblivious of, from want of memory or attention

Where it appears

Appears 2 times in the Bible.

Psalms 9:17 The wicked will go down to the grave. This is the fate of all the nations who ignore God.
Isaiah 65:11 “But because the rest of you have forsaken the Lord and have forgotten his Temple, and because you have prepared feasts to honor the god of Fate and have offered mixed wine to the god of Destiny,

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).