Anything (such as a piece of furniture, or a software feature) that is built in, not added as an extra.
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.
Derived from experience; acquired by learning.
Having much learning, knowledgeable, erudite; highly educated.
Scholarly, exhibiting scholarship.
A courteous description used in various ways to refer to lawyers or judges.