The word "fore sights" refers to the forward sights on a firearm or other sighting device. The antonyms for this word would be "rear sights" or "back sights," which are the sights located at the rear of the firearm. These sights are used in conjunction with the front or fore sights to align the firearm correctly and aim accurately. Other antonyms could include "blind sights" or "sightless," which would indicate the absence of any sighting mechanism on the firearm. Ultimately, the use of fore sights, rear sights, or no sights at all will depend on the type of firearm and the preferences or needs of the shooter.