eles acabarem

finish, end

→ acabar
acab finish; end + arem future subjunctive (they)
verb · 3rd-person plural, future tense Rare #34,914
finish, end With de + an infinitive, it means “finish doing” something.
PO: Quando acabarem de comer, podemos sair.
EN: When you finish eating, we can leave.
Conjugation of acabar
Subjunctive future
SingularPlural
First acabar —
Third acabar acabarem

Até acabarem a beleza, a juventude e o dinheiro dele?

Until his good looks, youth, and money run out?

— देवदास (2002)

Quando os animais da floresta acabarem, para onde vão virar as suas armas?

When the forest animals are gone, where will they turn their weapons?

— Lagaan: A Coragem de um Povo (2001)

Queimem esta carta quando acabarem de ler.

Burn this letter when you've finished reading it.

Isso é ruim, desligue tudo antes das baterias acabarem.

That's bad, turn everything off before the batteries run out.

— Salyut 7 (2017)

Queimem esta carta quando acabarem de lê-la.

Burn this letter when you've finished reading it.