the GNU version of the Collaborative International Dictionary of English
adj. Causing sickness; specif., causing surfeit or disgust; nauseating.
The Century Dictionary and Cyclopedia
Making sick; causing or tending to cause faintness, nausea, disgust, or loathing: as, sickening sounds; sickening servility.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. causing or able to cause nausea
Word Usage
"Rupert Murdoch defiantly insisted on Tuesday he was not responsible for what he called "sickening and horrible invasions" of privacy committed by his company, claiming he had been betrayed by disgraceful unidentified colleagues and had known nothing of the cover-up of phone hacking."