Diminutive endings are suffixes that are added to the end of words to indicate smallness or endearment. The three crossword solutions for the term 'diminutive endings' are 'ettes' (5 letters), 'ETS' (3 letters), and 'ules' (4 letters). These suffixes are commonly used in French, Spanish, and Italian to create diminutive forms of nouns, adjectives, and verbs. For example, the French suffix '-ette' is often used to create a feminine form of a word, such as 'BAGUETTE' from 'baguet'. Similarly, the Spanish suffix '-ito' is used to create a diminutive form of a word, such as 'perrito' from 'perro'. Finally, the Italian suffix '-ulo' is used to create a diminutive form of a word, such as 'cicciolo' from 'ciccia'.