Keyword stuffing is an SEO (Search Engine Optimization) practice that includes filling a webpage with an excessive number of keywords or phrases in an attempt to manipulate a site's ranking in search engine results. This technique is usually considered unethical and can result in penalties from search engines, as it diminishes the quality of content and user experience. Instead of keyword stuffing, it is recommended to count upon creating high-quality, relevant content that naturally includes keywords in a way that improves readability and provides value to users.