Question

adjectives that are feminine (describe girls) usually end in what letter?

Explanation:

In many languages (e.g., Spanish, French), feminine adjectives describing girls often end with "a". For example, in Spanish, "bonita" (pretty, feminine) vs "bonito" (pretty, masculine); in French, "jolie" (pretty, feminine) has a feminine form ending with "e" in some cases, but more commonly in Romance languages, the feminine adjective ending is "a" for many common adjectives when considering the pattern of gendered adjectives for girls/women.

Answer:

a (or e in some languages, but "a" is a very common ending for feminine adjectives describing girls in languages like Spanish etc.)