‘愈陷愈深’ is an adverbial phrase meaning 'deeper and deeper'—especially in a negative, worsening situation like emotional distress, debt, addiction, or trouble. It follows the ‘愈…愈…’ (the more… the more…) grammatical pattern, where the first 愈 means 'the more', 陷 means 'to sink or become trapped', the second 愈 repeats the comparative structure, and 深 means 'deep'. Together, it vividly conveys progressive entanglement or deterioration.

This phrase is commonly used in written and formal spoken Chinese to describe escalating difficulty or danger—not physical depth, but metaphorical descent into worsening states. It carries a tone of inevitability and concern, often appearing in news reports, psychological discussions, or literary descriptions of personal crises. While structurally similar to other ‘愈…愈…’ phrases, 愈陷愈深 is almost exclusively negative in connotation and rarely used for neutral or positive developments.