Flatmate

//ˈflætmeɪt// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A person with whom one shares a flat.

    "Yet when both Regine and her flatmate are at home they tend to spend their time in their rooms, although Regine (and probably the flatmate too) tends to spend more time in the communal areas of the flat when the other is not at home."

  2. 2
    an associate who shares an apartment with you wordnet
  3. 3
    A person with whom one shares any rental dwelling, not necessarily a flat. Ireland, New-Zealand, UK

    "It had been weeks since all the flatmates had sat down together for a meal. Communication was breaking down. Written notes had begun to appear all over the house; please don′t touch this food, I bought it especially for Hermione[…]."

Synonyms

All synonyms
housematehousemate

Example

More examples

"Tom gets annoyed having to constantly turn lights off that have been left on by his flatmate."

Etymology

From flat + -mate.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.