untenable (English)

Where does "untenable" come from?

The English adjective 'untenable' was formed by attaching the negative prefix 'un-' to 'tenable'[1]. The base word 'tenable' was borrowed from French, where it derives from the verb 'tenir', meaning 'to hold'[2]. Moving further back through the language stages, French 'tenir' developed from Middle French and Old French 'tenir', originating in Early Medieval Latin 'tenīre' and ultimately stemming from Classical Latin 'tenēre'[3]. Today, 'untenable' continues to reflect these ancestral roots by describing a position, opinion, or situation that cannot be held or sustained.

Full etymology tree

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

Ancestors

• un (English)
• tenable (English)

Sources

1. untenable (English) - Wiktionary
2. tenable (English) - Wiktionary
3. tenir (French) - Wiktionary

Updated October 2026

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