This is the 4832nd most frequent Spanish word.
debieron
"Debieron" means "they/you (plural) must have" or "they/you (plural) should have" in English.
Past conditional usage indicating a necessity or expectation in the past.
Debieron estudiar más para el examen.
They should have studied more for the exam.
Past modal usage expressing probability about past actions.
Debieron haber llegado ya al aeropuerto.
They must have already arrived at the airport.
Past conditional indicating a missed obligation or ideal action in a hypothetical past scenario.