What is the meaning of "Yikvuhu"?
Rashi: They should curse it. This is like "Kavah Li."
Who are "Orerei Yom"?
Rashi: They are people who curse their days. They intend to curse amidst their pain.
Ibn Ezra: Some say that this discusses people on a ship about to break. They curse the day that they boarded.
Ibn Ezra: They are eulogizers. They curse the days in every expression.
What is the meaning of "ha'Asidim Orer Livyasan"?
Rashi: They should be barren in their joining (intimacy). Malbim - children who will be born from conception on that night will curse that such intimacy be barren.
Rashi citing Yerushalmi (Mo'ed Katan 1:5): They will lament over their joining. This is like Lo Ye'ar'er Al Meso (Mo'ed Katan 8a).
Ibn Ezra: They are destined to arouse mourning. Livyasan is mourning; the Nun is in place of a Mem.
Ibn Ezra: Some say that the verse discusses people on a ship about to break; a Livyasan (whale) will consume them. Magihah in Devar Eliyahu - Hashem mentions a whale in His answer to Iyov - "Timshoch Livyasan b'Chakah", "ha'Sischak Bo k'Tzipor" (40:25, 29). Iyov said, no normal person would confront a Livyasan, only one who is so bitter that he wants to die. They will curse their day with all their hearts!
