Oxford Advanced American Dictionary

Definition of shit exclamation from the Oxford Advanced Learner's Dictionary

shit

exclamation
shit pronunciation English ʃɪt shit pronunciation American ʃɪt
 
(taboo, slang) a swear word that many people find offensive, used to show that you are angry or annoyedShit! I've lost my keys!
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 Less offensive exclamations to use are blast, darn it (especially North American English), damn or (British English) bother.