1. making something dirty or unclear with mud or a muddy substance
Usage: present participle of muddy
2. making something confused, unclear, or difficult to understand
Usage: figurative use

Examples

• The children were muddying their shoes in the puddles.
• Heavy rain was muddying the clear stream water.
• His contradictory statements are muddying the investigation.
• The politician kept muddying the issues instead of giving clear answers.
• Stop muddying the waters with irrelevant details.
• The construction work is muddying the usually pristine lake.