indubitable

Meanings

1. 1
   adj

   Clearly true; providing no possibility of doubt.

   The indubitable effect of the potion convinced many nonbelievers.

2. 2
   noun

   That which is indubitable.

   If we build logically upwards from a few indubitables, the whole system must remain correct.

3. 3
   adj

   too obvious to be doubted

Either from French indubitable or Latin indubitābilis. By surface analysis, in- + dubitable.

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