/ ˈsɪkənɪŋ; NAmE / adjective
1.
making you feel disgusted or shocked
SYN repulsive :
the sickening stench of burnt flesh
2.
making you afraid that sb has been badly hurt or that sth has been broken :
Her head hit the ground with a sickening thud.
3.
( informal ) making you feel jealous or annoyed :
'She's off to the Bahamas for a month.' 'How sickening!'
► sick·en·ing·ly adverb