This is the 787th most frequent Italian word.
gravi
"Gravi" means "serious" or "severe" in English.
Here, 'gravi' is used as an adjective meaning 'serious' or 'grave,' describing the potential consequences.
Le conseguenze di questa decisione potrebbero essere gravi.
The consequences of this decision could be serious.
In this sentence, 'gravi' again functions as an adjective describing the health condition of the patient, indicating severity.
Il paziente è stato ricoverato in condizioni gravi.
The patient was admitted in serious condition.
The term 'gravi' is used to qualify the mistakes, indicating that they should not be significantly harmful or critical.