D defs.my
Entry 1 sense Webster, 1913

Imperil

/ĭmˌ-pĕr'-əl/ · Im·per·il · IPA /ɪmˈpɛɹəl/
01 v. t. To bring into peril; to endanger.
imp. & p. p. Imperiled; p. pr. & vb. n. Imperiling
  1. 1.
    To bring into peril; to endanger.