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/sɜːkəmvæˈleɪʃən/ · noun
A rampart or other defensive entrenchment that entirely encircles the position being defended..
[...] and in a word, would intrench and fortify them round with as many circumvallations and breast-works, as my uncle Toby would a citadel.
The Saxon architect had exhausted his art in rendering the main keep defensible, and there was no other circumvallation than a rude barrier of palisades.
He just managed to finish her in time—the day before the date fixed for his breaking ground on a greater business still, the circumvallation of Mrs. Dunn.
Use circumvallation when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Circumvallation means A rampart or other defensive entrenchment that entirely encircles the position being defended..
The closest synonym depends on the sentence and intended sense.
Possible antonyms include contravallation.
[...] and in a word, would intrench and fortify them round with as many circumvallations and breast-works, as my uncle Toby would a citadel.
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