-es

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Variant of -s¹.
2. n. Variant of -s².

Wiktionary

1. n. Used to form the regular plural of nouns
2. n. that end in "(t)ch" (only when pronounced as IPA: [tʃ]) - glitch => glitches
3. n. that end in "(j)j" - hajj => hajjes
4. n. that end in "(s)s" - bus => buses
5. n. that end in "x" - box => boxes
6. n. that end in "(z)z" - waltz => waltzes
7. n. that end in "o" - tomato => tomatoes
8. n. that end if "sh" - ash => ashes
9. n. Used to form the third person singular present of verbs
10. n. that end in "(t)ch" (only when pronounced as IPA: [tʃ]) - impeach => impeaches
11. n. that end in "(s)s" - miss => misses
12. n. that end in "x" - tax => taxes
13. n. that end in "(z)z" - fizz => fizzes
14. n. that end in "o" - go => goes
15. n. that end if "sh" - wish => wishes