The Spanish word "senegalés" (meaning "Senegalese") is formed by combining the place name "Senegal" with the Spanish suffix "-és". This suffix is commonly used in Spanish to create words that describe people or things from a particular place (demonyms). For example, just as "francés" means "French" and "portugués" means "Portuguese", "senegalés" means "Senegalese" or "from Senegal".

Other common Spanish demonyms that follow this same pattern with the "-és" suffix include "inglés" (English), "japonés" (Japanese), and "holandés" (Dutch). Understanding this pattern can help you recognize and form other nationality words in Spanish.

The English word "Senegalese" is directly related to "senegalés", as both are derived from the country name "Senegal". While Spanish uses the suffix "-és", English uses "-ese" to form this particular demonym. This "-ese" suffix is also seen in other English nationality words like "Japanese", "Chinese", and "Portuguese".