1. to perform an action with confidence and decisiveness, without doubt or uncertainty
She would do without hesitation whatever it takes to help her family.
Ela faria sem hesitação o que fosse necessário para ajudar sua família.
2. to act immediately and confidently without pausing to consider alternatives
He said he would do without hesitation anything the boss asked of him.
Ele disse que faria sem hesitação qualquer coisa que o chefe lhe pedisse.