The universal sound of swearing across languages

Swear words are thought to have sounds that help facilitate the expression of emotion and attitude, but no study to date has investigated if there is a universal pattern in the sound of swearing across different languages.

Shiri Lev-Ari and Ryan McKay from Royal Holloway, University of London conducted a pilot study with speakers of five unrelated languages (20 individuals per language) and asked them to list the most offensive words they knew in their language, excluding racial slurs. The initial study revealed that swear words were less likely to include approximants, which include sounds like l, r, w and y. The authors suggest that approximants may be less suitable than other sounds for giving offense and investigated this in two further studies.

The authors asked 215 participants (from across six different languages) to rate pairs of pseudo-words (imaginary words created by the authors), one of which included an approximant. For example, in Albanian, the authors took the word "zog," meaning "bird," and changed this to "yog" to include an approximant and "tsog" without an approximant. The authors found that participants were significantly less likely to judge that words with approximants were swear words and selected words without approximants as swear words 63% of the time.

In a following study, the authors also looked at minced oaths -- which are variations of swear words deemed less offensive, for example "darn" instead of "damn." The authors found that approximants were significantly more frequent in minced oaths than swear words. The authors propose that this introduction of approximants is part of what makes minced oaths less offensive than swear words.

The use of approximants may not necessarily render a word inoffensive but the authors suggest that their findings indicate an underlying trend in how swear words may have evolved across different languages. The authors also highlight that some languages do have swear words that include approximants such as French, but French speakers included in the study still rated the pseudo-swear words lacking approximants as swear words, suggesting there may be a universal bias.

The authors conclude that their work suggests a potential universal pattern to swear words across different languages, with the lack of approximants a common feature when perceiving swear words.