What is another word for left holding the sack?
Pronunciation: [lˈɛft hˈə͡ʊldɪŋ ðə sˈak] (IPA) 
"Left holding the sack" is an idiomatic expression that means someone is responsible for something that has gone wrong, even though they are not the one who caused it. There are several synonyms for this phrase, including being "blamed" or "held accountable" for a situation. One could also be "left in the lurch" or "left out to dry" in the same scenario. Other expressions include being "thrown under the bus" or "hung out to dry," both of which imply being betrayed or abandoned. No matter the phrasing, the sentiment is the same: someone has been left to deal with an unpleasant outcome alone.
