Synonyms of 'expletive'
swear wordDictionary, curse, obscenity
He muttered an expletive under his breath.
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Curse is also a noun.
He shot her an angry look and a curse.
An oath is an offensive or emphatic word or expression which you use when you are angry or shocked.
Weller let out a foul oath and hurled himself upon him.
Thesaurus for expletive from the Collins English Thesaurus
An expletive is a rude word or expression such as 'Damn!' which you say when you are annoyed , excited , or in pain .