Here are some synonyms for "dire peril":
* Extreme danger
* Grave risk
* Imminent threat
* Critical situation
* Life-threatening situation
* Brink of disaster
* Precarious position
* Desperate circumstances
Examples:
* "The ship was in dire peril as the storm raged around it."
* "The villagers were living in dire peril under the oppressive regime."
* "The doctor warned that the patient was in dire peril and needed immediate surgery."
The word "dire" adds a sense of urgency and severity to the peril, making it clear that the situation is very serious and requires immediate action.