unattempted

From un- +‎ attempted.

unattempted (comparative more unattempted, superlative most unattempted)

1. Not attempted.
   • 1833 May, “Hayward’s Translation of Goethe’s “Faust””, in Fraser’s Magazine for Town and Country, volume VII, number XLI, London: James Fraser […], →OCLC, page 532, column 1:

     [Percy Bysshe] Shelley, a true vates, was called upon by their divine influence to render some choice passages from this very Faust, which, from confessed inability, [Francis Leveson-]Gower had left unattempted in his precious version, and some which from other motives he had purposely reticensed.