This is the 283rd most frequent Spanish word.
habría
"Habría" is the conditional form of "haber," meaning "would have."
Here, 'habría' is used to form the conditional perfect tense, indicating an action that would have been completed in the past under different circumstances.
Yo habría ido al parque si no hubiera llovido.
I would have gone to the park if it hadn't rained.
In this sentence, 'habría' is used impersonally to suggest that reviewing the document is a necessary action to consider.
Habría que revisar el documento antes de enviarlo.
It would be necessary to review the document before sending it.
Here, 'habría' is forming a hypothetical question reflecting on past events, exploring an alternate outcome.