It can be quite a shock when you first hear your child swear. You might be wondering where your child learned that kind of language. And whether he really understands what he’s saying. How you react to your child’s swearing now will influence his future swearing behaviour.

Young children often swear because they’re exploring language. They might be testing a new word, perhaps to understand its meaning. They might also be trying to express a feeling such as frustration. Or they might simply be saying the word because it sounds funny or gets a reaction. Children might also be imitating others when they swear.
The most effective way to deal with your child’s swearing is to ignore the swearing completely. No talking, no eye contact. If the behaviour is attention seeking, this is often the best way to stop it.
Your reaction will influence whether your child swears again. Staying calm is the key. This will go a long way towards preventing further swearing.
If your child continues to swear, or you feel it’s a good opportunity to teach her about swearing, try talking to her about her choice of words. For example, you could say, ‘We don’t use words that upset people’.
Preschoolers might not fully understand the words they use, but they can understand that swear words can hurt or offend others.
Should I explain what the word means?
Generally, toddlers and preschoolers don’t need explanations of swear words. They are too young to understand some of the concepts associated with the more common swear words. It’s enough just to say, ‘That’s not a nice word’.
Older children can benefit from a simple explanation, depending on the individual child. If you think your child might have some understanding of the meaning of the word, you can ask him what he thinks the word means. Then use general terms to explain why it’s not appropriate. For example, you could say, ‘That is a word for private body parts, and it’s not nice to use’.
Preschoolers (and some toddlers) can be intrigued by private body parts and bodily functions. They might start to use words such as ‘bum head’, ‘poo face’ and ‘farty’. Although some of these words might be unacceptable in your house, this is a phase that most children go through. They are just testing out the words and your reactions. Ignoring the words or letting your child know that they can’t be used will help curb this behaviour.
If you know why your child is swearing, it can help you decide on an appropriate response.
Children often like to try out words they hear or make up. And these are just as likely to be swear words as others. Children pick up swear words from many sources, outside and inside the home. Almost half of parents in our RCN reader survey reported that they believe their children learned to swear from the parents themselves. This isn’t too surprising – more than 40% of the parents responding to our survey said they swear every day.
But not all children learn from their parents. Research suggests that exposure to swear words on TV can lead to an increase in swearing in children. As children get older, their friends and peers will influence their choice of words too.
Studies on brain damage affecting the language areas of the brain have found that some people who have lost the ability to speak, or struggle to form words, can still swear easily. This is thought to be because swearing is processed in a different area of the brain.
Hartman, L. (1973). Some uses of dirty words by children. Journal of the American Academy of Child Psychiatry, 12(1), 108-122.
Jay, T. (2000). Why we curse: A neuro-psycho-social theory of speech. Philedelphia, PA: John Benjamis.
Kaye, B., & Sapolsky, B. (2004). Watch your mouth! An analysis of profanity uttered by children on prime-time television. Mass communication and society, 7(4), 429-452.
Schor, E., & American Academy of Pediatrics (2003). Caring for your school-age child: ages 5-12. New York: Bantam Books.
Van Lancker, D., & Cummmings, J. (1999). Expletives: neurolinguistic and neurobehavioral perspectives on swearing. Brain Research Reviews, 31(1), 83-104.