demonstrable
1. [ adjective ] necessarily or demonstrably true
Synonyms: incontrovertible
Examples:

"demonstrable truths"

Related terms: incontestable
2. [ adjective ] capable of being demonstrated or proved
Synonyms: provable
Examples:

"obvious lies" "a demonstrable lack of concern for the general welfare" "practical truth provable to all men"- Walter Bagehot

Related terms: obvious
Similar spelling:   demonstrably
  demonstrate
  demonstrated
  demonstrative
  demonstrator
  demonstratively
  demonstrability
  demonstration