How are words ending with sibilant sounds typically made plural?

Words ending with sibilant sounds, such as those that end in "s," "sh," "ch," "x," or "z," are typically made plural by adding "es." This rule helps to ensure that the plural form is more easily pronounced. For example, “bus” becomes “buses,” and “fox” becomes “foxes.” The addition of “es” not only avoids awkwardness in pronunciation but also aligns with conventional spelling patterns in English grammar.

In contrast, other methods of forming plurals, such as simply adding "s" or changing the vowel, do not apply to words ending in sibilant sounds. "Add ies" typically applies to words that end in a consonant followed by "y," not to those ending in sibilants. Hence, understanding the pattern for pluralization involving sibilant sounds reinforces correct usage in written and spoken language.