Being an essential and permanent part of something.
Being an included feature that normally comes as an extra.
Constructed as a non-detachable part of a larger structure.
Anything (such as a piece of furniture, or a software feature) that is built in, not added as an extra.
Having a marked degree of intuition.
The intuitive response turned out to be correct.
Easily understood or grasped by intuition.
Spontaneous, without requiring conscious thought.
One who has (especially parapsychological) intuition.