For masculine nouns:
* Pequeno (pronounced peh-KEH-noo) - This is the most common and general way to say "small."
* Miúdo (pronounced mee-OO-doo) - This is more informal and can also mean "thin" or "young."
For feminine nouns:
* Pequena (pronounced peh-KEH-nah) - This is the feminine form of "pequeno."
* Miúda (pronounced mee-OO-dah) - This is the feminine form of "miúdo."
Examples:
* Um carro pequeno (a small car)
* Uma casa pequena (a small house)
* Ele é miúdo (He is small/thin/young)
* Ela é miúda (She is small/thin/young)
You can also use the word pequeno for both masculine and feminine nouns, but it's more common to use the gender-specific forms when possible.