Subfloor

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    The floor structure supporting and underlying the visible flooring or other finishing surface such as a carpet

    "The original floor was still there: wide boards, laid tongue-in-groove, not the inferior subfloor they had predicted."

Synonyms

All synonyms
underfloorunderfloor

Example

More examples

"The original floor was still there: wide boards, laid tongue-in-groove, not the inferior subfloor they had predicted."

Etymology

From sub- + floor.

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