completely defeated

unbeatable position

both sides are injured

a crushing defeat

it's typical for an outcome of either a victory or defeat in the battlefields

nothing is worst than missing out on great opportunities

be defeated badly

failure

defeatism

proverb: Failure is the mother of success; Failure teaches success.

loser

utter defeat

defeated in battle

defeated nation

losers

defeat

to fall sick or ill; to be defeated

frustrated

defeat

lost battle

to suffer a major defeat resulting in the loss of many soldiers and generals

defeat

to corrupt

spending extravagantly and wasting one's family's financial resources

prodigal son (spoken)

prodigal person (spoken)

to describe someone who give others advice / help others to make plans but these always turn out to be unsuccessful

blot

rotten cotton inside

sepsis; septicemia; unfavourable for the qi and blood