make a dog's dinner (of something)

To make a mess of or completely ruin something. I thought I could trust Jim to finish the business proposal, but he made a dog's dinner of the whole thing!

Common Names:

Name	Pronounced	Usage
Tammi	TAM-ee	English
AljoŠA	-	Slovene, Croatian
Skuld	-	Norse Mythology
Hans	HAHNS (German, Dutch)	German, Dutch, Swedish, Norwegian, Danish
Sashka	-	Macedonian, Bulgarian
Frona	FRO-nə	English