D defs.my
Entry 1 sense Webster, 1913

Sickening

/sĭk'-ən-ĭng/ · Sick·en·ing · IPA /ˈsɪk(ə)nɪŋ/
01 a. Causing sickness; specif., causing surfeit or disgust; nauseating.
  1. 1.
    Causing sickness; specif., causing surfeit or disgust; nauseating.