1. a person or thing that squelches or suppresses something
2. a crushing or silencing remark or response
Usage: informal

Examples

• The principal was known as a squelcher of student protests.
• Her sarcastic comment was a real squelcher that ended the argument.
• The new policy acted as a squelcher of creative expression.
• His witty comeback was the perfect squelcher for the heckler.
• The rain was a squelcher of our picnic plans.
• That critical review was quite a squelcher for the young author.