For "short in duration":
* Maikli (ma-ee-klee) - This is the most common and direct translation.
* Sandali (san-dah-lee) - This means "moment" or "a short time".
* Iskorto (is-kor-toh) - This is a bit more formal and means "concise".
For "brief summary":
* Buod (boo-od) - This means "summary" or "abstract".
* Sipnayan (sip-nah-yan) - This is a more formal word for "summary".
For "briefcase":
* Portafolio (por-tah-foh-lee-oh) - This is the most common translation.
* Maleta de mano (mah-leh-tah deh mah-noh) - This means "hand luggage" or "carry-on bag".
The best translation will depend on the specific context of how "brief" is being used.