untenable (English)

Where does "untenable" come from?

The word 'untenable' is formed by combining the negative prefix 'un-' with the adjective 'tenable.' Rooted in the Old French word 'tenir,' meaning 'to hold,' 'tenable' originally described something capable of being maintained or defended. When paired with 'un-,' the term evolved to describe positions, arguments, or dwellings that simply cannot be held or sustained.

Full etymology tree

• untenable (English), 'Not able to be held or sustained, such as of an opinion or position.'
  • affix un- (English), 'not'
  • affix tenable (English), 'capable of being maintained or justified; well-founded'
    • borrowed tenable (French), 'tenable'
      • derived tenir (Old French), 'to possess; to have'
        • inherited tenīre (Early Medieval Latin)
          • inherited tenēre (Latin), 'tenderly, lovingly'

Direct ancestors

• un (English)
• tenable (English)

Updated June 2026

Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris