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
Berjouhi	-	Armenian
Isaiah	ie-ZAY-ə (English), ie-ZIE-ə (English)	English, Jewish, Biblical
Melisizwe	-	Southern African, Xhosa
Piripi	-	Maori
Margalita	-	Hebrew
VÍCtor	BEEK-tor (Spanish)	Spanish, Catalan