A warning shout in golf used to alert other players that a ball is heading in their direction and they should take cover. It's an essential safety call that all golfers must use when their shot might endanger others.
Shortened from 'before,' originally a military term meaning 'look out ahead.' In golf, it evolved from the longer warning 'fore-caddie' used when a ball was heading toward the caddie positioned ahead to spot balls, eventually shortened to just 'fore.'
The tradition of shouting 'fore' is so ingrained in golf culture that it's often a golfer's first instinct even when hitting practice balls at a driving range, and failing to call 'fore' when appropriate is considered one of the worst breaches of golf etiquette. The call must be loud enough to be heard over considerable distances, as golf balls can travel over 300 yards at speeds exceeding 150 mph.
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