swearing
n.-
1 rude language (n.) B1 Intermediate Informalusing rude or offensive words, often when you are angry or surprised.
the use of profane, obscene, or taboo language, typically as an emotional outlet.
ExampleThere was a lot of swearing in the film, so it wasn't suitable for children.
ExampleThe manager warned the staff that excessive swearing in front of customers would result in immediate disciplinary action.
UsageUncountable when referring to the general habit or act of using bad language.
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2 making an oath (n.) C1 Advanced Formal Lawthe act of making a serious, formal promise, especially in a court of law.
the formal act of taking an oath or making a solemn declaration of truth or allegiance.
ExampleThe swearing of the witness took place before the questioning began.
ExampleThe swearing-in ceremony for the new president was attended by dignitaries from across the globe.
UsageOften used in the phrase 'the swearing of an oath'.
From Middle English sweryng; equivalent to swear + -ing.