1. to increase or enhance someone's enthusiasm, energy, or motivation
The coach's pep talk helped boost enthusiasm among the team members.
O discurso motivacional do treinador ajudou a aumentar o entusiasmo entre os membros do time.
2. to revive or reinvigorate interest or excitement about something
The new marketing campaign will boost enthusiasm for the product launch.
A nova campanha de marketing vai aumentar o entusiasmo para o lançamento do produto.