1. to work with complete dedication, enthusiasm, and sincere effort without reservation or hesitation
She was working wholeheartedly on the project, giving it her full attention and energy.
Ela estava trabalhando de todo o coração no projeto, dedicando sua atenção e energia completas.
2. to engage in work with genuine commitment and passion
The team was working wholeheartedly to meet the deadline.
A equipe estava trabalhando de todo o coração para cumprir o prazo.