1. To strengthen oneself physically, mentally, or emotionally; to prepare oneself for something difficult
She fortified herself with a cup of coffee before the difficult meeting.
Ela se fortaleceu com uma xícara de café antes da reunião difícil.
2. To reinforce one's position or resolve; to make oneself more resilient
He fortified himself with determination to face the challenge.
Ele se fortaleceu com determinação para enfrentar o desafio.
3. To provide oneself with food, drink, or provisions for sustenance
The hikers fortified themselves with snacks before climbing the mountain.
Os caminhantes se fortaleceram com lanches antes de subir a montanha.