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- But I discovered no trace of him and was beginning to conjecture that some fortunate chance had intervened to prevent the execution of his menaces when suddenly I heard a shrill and dreadful scream.Chapter 23 (14% in)
intervened = interfered (to prevent something from happening)
- The sledge was still visible, nor did I again lose sight of it except at the moments when for a short time some ice-rock concealed it with its intervening crags.Chapter 24 (30% in)
intervening = getting between (a person and something viewed)
There are no more uses of "intervene" in Frankenstein.
Typical Usage (best examples)