What does cannonproof mean?
Cannonproof means Impenetrable by cannonballs..
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Pronunciation varies by accent · adjective
Impenetrable by cannonballs..
It had not helped the duke to build himself a cannonproof stone chamber to sleep in for dread of vengeance after the assassination of Orleans.
A cannonproof breastwork, built during the previous war, extended along the beach from the hills to the rocks.
Use cannonproof when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Cannonproof means Impenetrable by cannonballs..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
It had not helped the duke to build himself a cannonproof stone chamber to sleep in for dread of vengeance after the assassination of Orleans.
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