If you're intuitive, you can probably guess what this word means just by looking at it. No? Maybe you're not so intuitive, after all. Intuitive means having the ability to understand or know something without any direct evidence or reasoning process.
Psychics are intuitive. So are mothers when they know you're lying. A process can be said to be intuitive as well, if it can be easily learned without any prior training — like an easy-to-learn software program. In human beings, intuitiveness is often thought of as something more mystical, as in the ability psychics have to predict the future.