1. in a way that causes nausea or disgust
2. to an excessive or annoying degree
Usage: informal

Examples

• The smell from the garbage was sickeningly strong.
• The movie showed sickeningly violent scenes.
• She was sickeningly sweet to everyone at the party.
• The room spun sickeningly as he stood up too quickly.
• He was sickeningly wealthy while others struggled.
• The food had turned sickeningly sour in the heat.
• Her sickeningly perfect performance made others jealous.