1. to continue being loyal, devoted, or true to someone or something
She promised to remain faithful to her husband throughout their marriage.
Ela prometeu manter-se fiel ao seu marido durante todo o casamento.
2. to stay committed to a belief, principle, or cause
The organization remained faithful to its original mission despite pressure to change.
A organização manteve-se fiel à sua missão original apesar da pressão para mudar.
3. to be accurate or true to the original
The translation remained faithful to the author's original text.
A tradução manteve-se fiel ao texto original do autor.