Gibborim (from the singular גִּבֹּר, גִּבּוֹר gibbor) is a Hebrew word that can be glossed "mightiest" which is an intensive for gabar (גּבר) that can be glossed "mighty". Many times it is used of people who are valiant, mighty, or of great stature. There is some confusion about Gibborim as a class of beings because of its use in Genesis 6:4, which describes the Nephilim as mighty (gibborim).
The Gibborim are also listed among the Song-Uttering Choirs, a collective group of angelic orders who reside in Makon, the 5th Heaven, and who frequently sing the Trisagion alongside the Ishim.
The word gibborim is used in the Tanakh over 150 times and applied to men as well as lions (Proverbs 30:30), hunters (Genesis 10:9), soldiers (Jeremiah 51:30) and leaders (Daniel 11:3).
In modern Hebrew the word "gibbor" (the singular form of gibborim), equates with "hero" (if noun), or "brave" (if adjective).