The word "stormtight" refers to something that is resistant to harsh weather conditions, especially storms. Some synonyms for this word include weatherproof, watertight, windproof, stormproof, and rainproof. These words all express the idea of protection against extreme weather and are often used to describe clothing, construction materials, or buildings that are resistant to storms and other forms of harsh weather. Other synonyms this word can include storm-resistant, storm-safe, weather-tight, as well as hurricane-proof. No matter which synonym you choose, they all share a common thread which is that they indicate sturdy protection against the elements.