From Longman Dictionary of Contemporary Englishsickening thud/crash/sound etcsickening thud/crash/sound etcSOUNDan unpleasant sound that makes you think someone has been injured or something has been broken His head hit the floor with a sickening thud. There was a sickening sound of tearing metal. → sickening
Examples from the Corpus
sickening thud/crash/sound etc• Her heart took up a sickening thud.• One pitched out, hitting the ground with a sickening thud.• Then, with a sickening thud in her solar plexus, she understood.• They heard screams, kicks, the sickening thud of a punch, and the ogre roaring Solper's name.• Then she landed on the Market Square flagstones with a sickening crash to lie motionless. 