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Pronunciation varies by accent · noun
A vertical shaft leading upward from a cave passage, sometimes connecting with passages above..
Use aven when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Aven means A vertical shaft leading upward from a cave passage, sometimes connecting with passages above..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use aven where its definition matches the intended context.
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