We cannot help but judge others on the basis of their speech. Unfortunately, when it comes to taboo language, it is a common assumption that people who swear frequently are lazy, do not have an adequate vocabulary, lack education, or simply cannot control themselves.
The overall finding of this set of studies, that taboo fluency is positively correlated with other measures of verbal fluency, undermines the POV [Poverty of Vocabulary] view of swearing. That is, a voluminous taboo lexicon may better be considered an indicator of healthy verbal abilities rather than a cover for their deficiencies.
Speakers who use taboo words understand their general expressive content as well as nuanced distinctions that must be drawn to use slurs appropriately.
Kristin Jay and Timothy Jay