built-in

built-in (not comparable)

1. Constructed as a non-detachable part of a larger structure.
2. Being an essential and permanent part of something.
3. Being an included feature that normally comes as an extra.

• inbuilt
• (being an essential and permanent part of something): instilled, infused, integrated; See also Thesaurus:intrinsic
• (being an included feature that normally comes as an extra): incorporated, integrated

Use built-in when directly before a noun:

• an apartment with a built-in dishwasher

built-in (plural built-ins)

1. Anything (such as a piece of furniture, or a software feature) that is built in, not added as an extra.

• in-built, inbuilt