built-in
UK: ˌbɪlt ˈɪn | US: ˌbɪlt ˈɪn
adj. integrated as part of a larger structure or system
adj. inherent or naturally present
n. a feature or component that is permanently included
The term "built-in" emerged in the early 19th century, combining "built" (past participle of "build," from Old English byldan, meaning "to construct") and "in" (from Old English inn, meaning "inside"). It originally described physical components integrated during construction (e.g., built-in cabinets) and later expanded metaphorically to abstract systems (e.g., built-in safeguards). The morphemes retain their literal meanings, reflecting the word’s logical composition.
The house has built-in shelves to save space.
The software includes built-in security features.
Her confidence seems built-in, not learned.
The car’s built-in GPS makes navigation effortless.
Critics praised the phone’s built-in durability.