petrifying

/P EH1 T R AH0 F AY0 IH0 NG/
verb
  1. 1

    To harden organic matter by permeating with water and depositing dissolved minerals.

  2. 2

    To produce rigidity akin to stone.

  3. 3

    To immobilize with fright.

  4. 4

    To become stone, or of a stony hardness, as organic matter by calcareous deposits.

  5. 5

    To become stony, callous, or obdurate.

  6. 6

    To make callous or obdurate; to stupefy; to paralyze; to transform; as by petrification.

adjective
  1. 1

    Causing immense fear; extremely scary

    โ€œThe idea of speaking in front of such a large audience was petrifying.โ€

Source: https://en.wiktionary.org/wiki/petrify, https://en.wiktionary.org/wiki/petrifying