was absent, missed (an event or obligation), was missing, was lacking
Você faltou quando ensinaram Direito!
You must have been absent when they taught you the law!
— Questão de Honra (1992)
Boa parte dos alunos faltou por causa da chuva.
Many students were absent because of the rain.
Quantas vezes você faltou a esta aula?
How many times have you missed this class?
Ele faltou por causa da tempestade.
He was absent because of the storm.