built-in

[ bilt-in ]

/ ˈbɪltˌɪn /

built so as to be an integral and permanent part of a larger construction: The wall has a built-in bookcase.

existing as a natural or characteristic part of something; inherent: a built-in contempt for daydreaming.

a built-in piece of furniture or appliance.

an additional feature or capability, as of a machine or a service: a car with power steering, power brakes, and other built-ins.

Origin of built-in

First recorded in 1895–1900

Luckily, Tor was prepared for this sort of assault, and has built-in defenses to protect against it.

The Attack on the Hidden Internet |Marc Rogers |December 29, 2014 |DAILY BEAST
Newer devices may have built-in passwords that are difficult to update.

How Your Pacemaker Will Get Hacked |Kaiser Health News |November 17, 2014 |DAILY BEAST
If a sequel to Liquid Sky emerges out of the current work of Carlisle and Tsukerman, there will be a built-in audience.

Punks, UFOs, and Heroin: How ‘Liquid Sky’ Became a Cult Movie |Daniel Genis |June 2, 2014 |DAILY BEAST
The robot also has built-in voice recognition and a speaker that a human operator can use to challenge suspected intruders.

Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict |Kyle Mizokami |April 3, 2014 |DAILY BEAST

So the built-in challenge automatically is creating iconic sets and costumes on a really tight budget.

The Art of Smutty Spoofs: Porn Parodies Aren’t a Joke Anymore |Aurora Snow |March 15, 2014 |DAILY BEAST
That young man has a mind equipped with a built-in calculator.

Sabotage in Space |Carey Rockwell
Don asked Rezar, "But if this built-in morality of yours is so strong, why didn't it prevent you from taking off with Superior?"

And Then the Town Took Off |Richard Wilson
In their arrangement the built-in beds were in the arbor houses placed generally end-to-end along two or three sides.

Virginia Architecture in the Seventeenth Century |Henry Chandlee Forman
There's a built-in cupboard over at the other side, where you can keep your things!

Three Times and Out |Nellie L. McClung
It had a built-in dog attitude—friendly toward all humans, but loyal only to its master.

A Spaceship Named McGuire |Gordon Randall Garrett

built-in

made or incorporated as an integral part a built-in cupboard; a built-in escape clause

essential; inherent

Australian a built-in cupboard or wardrobe