The term 'Feminizing Suffix' refers to a type of suffix that is added to the end of a word to indicate femininity. The crossword solutions for this term are ESS (3 letters), ENNE (4 letters), ETTE (4 letters), INE (3 letters), and INA (3 letters). These suffixes are commonly used in English, French, and Spanish to indicate a feminine form of a word. For example, the suffix -ine can be added to the end of the word 'HERO' to create the word 'HEROINE'. Similarly, the suffix -ette can be added to the end of the word 'WAITRESS' to create the word 'waiterette'.