The phrase "at once relieved" is correct and usable in written English.
It can be used to express a simultaneous feeling of relief in response to a situation or event.
Example: "When she heard the good news, she was at once relieved and grateful."
Alternatives: "immediately relieved" or "instantly relieved".
He sounded at once relieved at having found a place and fretful over what another earthquake or hurricane might do to it.
I respond, all at once relieved yet guilty and safe inside the rehearsed reply: "I am sorry, I am not a doctor.
"That's great!" Mangano said, looking at once relieved and like she expected it.
At once relieved that someone I knew had undergone a LEEP and terrified that I was in for some serious pain, I spent the weeks leading up to my consultation with the doctor who would perform the LEEP (yes, a different doctor) doing research.
Once relieved, the remaining pain is purely migrainous and is therefore triptan-responsive.
He was at once gracious and relieved.
Miraculously, Silver makes philandering Burton sympathetic even as she compassionately conveys the ambivalence Julia feels, at once insulted and relieved by her husband's infidelity.
And every day I am at once scared and relieved.
See page 18. Squeezing sixteenths IN RESEARCHING Battle-scarred veterans at 25, Matthew Schifrin came to understand why options trading is a young persons game: They have to stand for long hours, monitor a dozen screens at once, yell loudly and relieve the tension with adolescent jokes.
Tired and thrilled and relieved all at once, about a dozen players leaned back in chairs quietly, a few perching a beer on a knee, looking like a crew of trench diggers satisfied at the end of a hard day.
"We are delighted and relieved and pleased all at once," said Thomas A. Cole, the chairman of the firm's executive committee.
