Etymology

weatherproof

W4E1A1T1H4E1R1P3R1O1O1F4

Today it means: Capable of resisting damage caused by the weather. Full definition →

English proof
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The story

  1. Englishweather
  2. Englishproof
  3. English todayweatherproof

From weather + -proof.

Etymology from Wiktionary, CC BY-SA 4.0.