otro

The Spanish word "otro" translates to "other" or "another" in English.

Meaning:

1. Another / One more:
   When used to indicate an additional item, person, or thing that is different from one already mentioned.
   Example:

   • Quiero otro libro. — I want another book.

2. The other:
   To refer to the second or remaining part of a set of two or more, often contrasting or differentiating from the one already known.
   Example:

   • Este es mi hermano, y aquel es el otro. — This is my brother, and that one is the other.

Parts of the word:

• It is a pronoun, adjective, or sometimes a noun depending on its use.
• Gender and number agreement:
  • otro (masculine singular)
  • otra (feminine singular)
  • otros (masculine plural or mixed)
  • otras (feminine plural)

Synonyms:

• Adjective/Pronoun: diferente, adicional, distinto.
  (Though these don't serve exactly the same grammatical function, they convey similar meaning in context.)

Antonyms:

• Mismo/a/os/as (same)—used to denote sameness, the opposite of "otro".

---

Summary:

"Otro" is a versatile Spanish word mainly used to point out something or someone different from what was already specified, or to add one more item or person. It is widely used and changes form depending on gender and number.