walk-in

UK: ˈwɔːk ɪn | US: ˈwɔːk ɪn

Definition
  1. n. a person who enters a place without an appointment

  2. n. a room or area accessible without passing through another space (e.g., a walk-in closet)

  3. adj. designed for or allowing immediate entry without prior arrangement

Structure
walk <move on foot>in <inside>
Etymology

The term "walk-in" combines the verb "walk," derived from Old English wealcan (to roll or move), with the preposition "in," from Old English inn (inside). Originally a phrasal verb ("walk in"), it evolved into a compound noun/adjective in the 20th century, reflecting modern convenience culture where unannounced access (e.g., clinics, storage spaces) became standardized.

Examples
  1. The clinic accepts walk-in patients during weekends.

  2. She organized her shoes in the spacious walk-in closet.

  3. As a walk-in candidate, he waited two hours for the interview.

  4. The restaurant prioritizes reservations but accommodates walk-ins.

  5. Their new apartment features a walk-in pantry for extra storage.