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Pronunciation varies by accent · adjective
(archaic) safe against the effects of thunder or lightning..
Use thunderproof when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Thunderproof means (archaic) safe against the effects of thunder or lightning..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use thunderproof where its definition matches the intended context.
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