English edit

Etymology edit

From Middle English undoutable, undoutabil, equivalent to un- +‎ doubtable.

Adjective edit

undoubtable (not comparable)

  1. (rare) Incapable of being doubted; undoubted; indubitable.
    • 1904, John Galsworthy, chapter 20, in The Island Pharisees:
      Her undoubtable quality had a non-individual flavour, as if standing for her class.

Derived terms edit

References edit