Meaning ofstuff upin English

Verb

1. to make a serious error; blunder
   He managed to stuff up the project by missing the deadline.
2. to cause damage or failure; ruin something
   The cold weather will stuff up your nose if you don't wear a mask.
   Synonyms:

   mess upbotchbunglemuck upfoul upruinwreckdamage
   Antonyms:

   fixrepairrestoreimproveenhance
3. to block or clog (nasal passages, etc.)
   The company's financial troubles began when they stuff up a major business deal.
   Synonyms:

   clogblockcongestobstructchoke
   Antonyms:

   clearunclogunblockdrain