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.
Naturally part of something; existing throughout and within something; intrinsic.
Of something which has always already been.
Being within the limits of experience or knowledge.
Taking place entirely within the mind of the subject and having no effect outside of it. Compare emanant, transeunt.
Existing within and throughout the mind and the world; dwelling within and throughout all things, all time, etc. Compare transcendent.
Restricted entirely to the mind or a given domain; internal; subjective.