Made straight. — The verb occurs only in this book (Ecclesiastes 7:13; Ecclesiastes 12:9, “set in order”) and in Rabbinical Hebrew. So likewise “that which is wanting” is peculiar to this passage, and to later Hebrew.
Related Commentaries of Ecclesiastes 1:15
Ecclesiastes 1:15
15 That which is crooked cannot be made straight: and that which is wantingc cannot be numbered.