unfitness

1. The characteristic of being unfit or ill-suited.
   • 1749, Henry Fielding, The History of Tom Jones, a Foundling. In Six Volumes, volume (please specify ), London: Printed by A[ndrew] Millar, […], OCLC 928184292 ↗:

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     Among other particulars which constituted the unfitness of things in Mr Square's opinion, danger and difficulty were two.

2. The characteristic of being unfit or out of physical shape.

• German: Untauglichkeit