This is the 18389th most frequent Russian word.
экстренно
Urgently.
In this sentence, "экстренно" is used as an adverb to describe the urgency with which the trip was canceled.
Мне пришлось экстренно отменить поездку.
I had to urgently cancel the trip.
Here, "экстренно" modifies the verb to emphasize the emergency nature of the action.
Пациента доставили в больницу экстренно.
The patient was urgently transported to the hospital.
"Экстренно" is used in the context to indicate that actions must be taken swiftly due to the critical situation.