1. A genuine, sincere, and determined attempt to accomplish something; an effort made with real commitment and intent
He made a serious try at learning Portuguese, dedicating two hours every day to study.
Ele fez uma tentativa séria de aprender português, dedicando duas horas diárias ao estudo.
2. An earnest effort to achieve a goal or succeed in an endeavor, often implying determination despite potential difficulty
After years of rejection, she finally made a serious try at starting her own business.
Após anos de rejeição, ela finalmente fez uma tentativa séria de iniciar seu próprio negócio.