Plural of deepener; multiple things or people that make something deeper or more profound.
From 'deepener' with the regular plural '-s' ending. The term maintains the flexibility to describe both physical and metaphorical means of deepening.
Deepeners could be anything from actual canal-dredging equipment to philosophical ideas that add complexity to your thinking—the word's broad applicability shows how English lets us apply the same concept across completely different domains.
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