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Pronunciation varies by accent · noun
A waterproof board placed over an opening, such as a door or window, to prevent floodwater from entering..
Use floodboard when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Floodboard means A waterproof board placed over an opening, such as a door or window, to prevent floodwater from entering..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use floodboard where its definition matches the intended context.
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