English Words Starting With R

• rooftop

  nounB2
  /ˈruːf.tɒp/The outer surface of a building's roof; the top of a roof.
• rooftree

  nounLow Frequency
  /ˈruːftriː/The ridge beam of a roof; the highest beam running along the peak of a pitched roof.
• rooibos tea

  nounLow to Medium
  /ˈrɔɪbɒs tiː/A caffeine-free herbal tea made from the fermented leaves of the South African Aspalathus linearis shrub.
• rooikat

  nounLow (Specialist/Regional)
  /ˈruːɪkɑːt/A medium-sized wild cat native to southern Africa, the caracal (Caracal caracal).
• rooinek

  nounLow
  /ˈrɔɪnɛk/A derogatory term for an English-speaking person, especially a British person, in South Africa.
• rook

  nounverbverb-transitiveC1/C2
  /rʊk/A type of crow (bird) with black plumage and a loud call; also a chess piece shaped like a castle tower.
• rookery

  nounLow
  /ˈrʊkəri/A colony of breeding rooks or other gregarious birds or animals.
• rookie

  nounHigh
  /ˈrʊk.i/A person who is new to and inexperienced in a particular activity, organisation, or profession.
• room

  nounverbverb-intransitiveA1
  /ruːm/An enclosed space or area within a building, separated by walls and a door, typically used for a specific purpose such as living, sleeping, or working.
• room and board

  nounB2
  /ˌruːm ən ˈbɔːd/A fixed arrangement providing both lodging (a place to sleep) and meals.
• room clerk

  nounC1
  /ˈruːm ˌklɑːk/A hotel employee responsible for the assignment, maintenance, and availability of guest rooms.
• room divider

  nounB1
  /ˈruːm dɪˌvaɪ.dər/A freestanding or fixed piece of furniture or structure used to separate a large room into distinct areas without building permanent walls.
• room father

  nounRare / Low Frequency
  /ˈruːm ˌfɑːðə/An informal term for a man who shares a room with another person, particularly in a living situation (e.g., dormitory, shared house), and whose presence or role becomes a significant, familiar part of the domestic environment.
• room mother

  nounC1
  /ˈruːm ˌmʌðə(r)/A parent volunteer, typically a mother, who helps organize activities and provides support for a specific class in a school.
• room service

  nounB1
  /ˈruːm ˌsɜː.vɪs/A hotel service that delivers food and drinks to guests' rooms.
• room temperature

  nounB2
  /ˌruːm ˈtem.prə.tʃər/The average ambient temperature of a room, typically considered comfortable for humans, generally between 20°C (68°F) and 22°C (72°F).
• roomer

  nounC1/C2
  /ˈruːmə/A person who rents and lives in a room in someone else's house.
• roomette

  nounLow
  /ruːˈmɛt/A small private sleeping compartment on a train, typically with a bed that folds into the wall or converts from seats.
• roomful

  nounC1
  /ˈruːm.fʊl/A noun denoting a quantity that fills a room or an amount that a room can hold.
• roomie

  nounMedium
  /ˈruːmi/A person with whom one shares a room, flat, or house, especially in an informal, friendly context.

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