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Pronunciation varies by accent · noun
(rare) The state or condition of being subterraneous..
Use subterraneousness when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Subterraneousness means (rare) The state or condition of being subterraneous..
Common synonyms include subterraneanness.
The opposite depends on the specific sense.
Use subterraneousness where its definition matches the intended context.
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