sad sack noun
plural ∼ sacks [count] US, informal + old-fashioned : a person who is not successful or able to do things well : an inept person who causes feelings of pity or disgust in other people
▪ The team is just a bunch of sad sacks. [=losers]
▪ The team is just a bunch of sad sacks. [=losers]
— sad–sack adjective always used before a noun
▪ a sad-sack team ▪ a sad-sack performance
▪ a sad-sack team ▪ a sad-sack performance
