demonstrably

Everyday

In a way that can be clearly shown or proved: you can point to facts that show it is true. tree →

In the lessons

In science and arguments it tells the reader a claim is backed by evidence, not just opinion: «demonstrably false». In the exam voice it is a strong, formal word. Phrases: «demonstrably true», «demonstrably false», «demonstrably better».

Examples

• That claim is demonstrably false: look at the results. tree →
• The new bridge is demonstrably safer than the old one. tree →
• Practice has made her demonstrably faster at times tables. tree →
• The medicine works, as the tests demonstrably show. tree →
• His story was demonstrably untrue, because the shop was closed. tree →
• Recycling demonstrably reduces rubbish in our bins. tree →

Note

Adverb from «demonstrable» (able to be shown) and the verb «demonstrate». Stress on «MON»: «de-MON-stra-bly» (some say «DEM-on-stra-bly»). Formal; in everyday talk people say «clearly» or «provably».