Swear words can indicate something you wanted or needed to express at the time of the dream (emotion, thoughts, excitement, etc.).
Swearing to tell the truth or taking an oath can represent an intention to be honest, a desire to convince someone, or a wish for someone else to be honest.
See also: Communication, Feeling, Words, Agreement [1]
To hear others swear in your dream, indicates that you have overlooked an urgent matter or situation. Someone may even need to be rescued from some unusual circumstances. It may be your job to protect them. [2]
A lover will have cause to suspect the faithfulness of his affianced after this dream.
To dream that you are swearing before your family, denotes that disagreements will soon be brought about by your unloyal conduct. [3]
A maiden who has this dream should look to her own conduct, especially if the profanity she hears is understandable to her. [4]
blasphemy: are turning your wil against potential guidance from within.
having sworn: wil know about the insincerity of a blood oath participant.
of: your actions deny your latent capabilities.
others: wil be blamed for actions you thought, but did not act upon.
relatives: your worry is wel -founded, your family is at stake. [7]