predeceasing

/P R EH1 D AH0 S IY1 S IH0 NG/
verb
  1. 1

    To die sooner than.

    โ€œHusbands usually predecease their wives.โ€

Source: https://en.wiktionary.org/wiki/predecease, https://en.wiktionary.org/wiki/predeceasing