This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To die before (another person).

n. The death of one person or thing before another.

v. To die sooner than.

v. To die sooner than.

n. The death of one person or thing before another.

n. Decease before another.

To die before; precede in dying.

v. die before; die earlier than

"This sense of loneliness was compounded by the fact that Twain had by then also buried two of his four children – a good deal of his reminiscence comes in response to moving little scraps of notes that his daughter Susy had prepared for a book about him, before she died; another daughter, Jean, would predecease him in the course of his narration."

outlive    survive   

predeceased    predeceases    predeceasing   

expire    pop off    choke    buy the farm    conk