Formal:
* 仔 (zai) - This is the most common and neutral way to say "boy," often used in situations where respect is necessary.
* 男仔 (naamzai) - This is a more formal way to say "boy," literally meaning "male child."
Informal:
* 細佬 (sai lou) - This is a more informal way to say "boy," literally meaning "younger brother." This is often used when referring to a young boy or a younger male friend.
Other:
* 小童 (siu tung) - This means "child" and can be used to refer to a boy, but it's not as common as the other options.
It's important to note that the tone of the word can change the meaning, so it's best to listen to a native speaker to get the correct pronunciation.