Intuition

Intuition, sometimes referred to as The 6th sense, is when someone is highly aware of their surroundings. Usually, a person can sense when something is about to happen, before it does. This can can be an extension of Premonition, or an ability on it's own.

The Halliwell Sisters
All four of The Halliwells have displayed a Sixth Sense for danger. Prue felt a chill just seconds before Shax attacked her and her sisters. Piper said she had a bad feeling at the end of Look Who's Barking, which is only a short time before Prue is killed by Shax. Paige also displayed some type of intuition when she could sense something was about to happen in Oh My Goddess! Part 1. However, Phoebe possess a much stronger version of this ability due to her Premonition power.

Phoebe Halliwell
Phoebe's Intuitive powers are legendary within demonic circle's, so much so that demons are hesitant to attack her and would much rather go after her sister's, Piper and Paige because their less intuitive. Phoebe can sense and predict demonic attacks and have also stated that she could sense when an opponent would throw a fireball at her. Phoebe is particularly skilled at anticipating her adversary's next attack during physical combat, even by surprise. For example, she was able to to successfully kill a demon and physically subdue the other demon, Lantos, in a small elevator from an attack from behind. Lantos later commented to the demon Imara that he was lucky to have escaped Phoebe as her intuitive powers are highly skilled. When she was deaf, she could still sense when a Kazi teleported in right behind her, and levitated out of the way. Phoebe is also sensitive to magical shifts in time. Also at the end of Prue's funeral, when demons attacked, Phoebe moved out of the way immediately when a demon faded in soon after the demon shot a lightining bolt. This means she knew he was going to attack. Normally Phoebe would attack the demon first instead of hiding.

Zankou
Zankou had good intuition due to his Prescience power, it allowed him to see around a place without actually being there. In theory, he could use his power to sense if someone was around or on their way to him.

Ronny
When Ronny gets Phoebe's powers in Ordinary Witches, when Zankou attacks the Manor, Ronny was able to tell when the next Energy Ball was coming there way. He said it just in time and Phoebe and Ronny ducked out the way.