The phrase "at once indeed" is correct and usable in written English.
It can be used to emphasize immediacy or certainty in a statement, often in a formal or literary context.
Example: "The decision was at once indeed surprising and expected, leaving everyone in a state of confusion."
Alternatives: "immediately certainly" or "right away indeed".
So where, exactly, is Mr Bible's triumph?Wall Street spotted it at once; indeed, Philip Morris's share price was rising steadily as Mr Bible spoke.
The design of IGB allows users to view hundreds, even thousands of ESTs at once; indeed, one can even load the entire EST data set for a single chromosome.
What if four or five did so at once?And indeed, though the spotlight has fallen on Italy this week, it is not the only malefactor.
THE HISTORY Country Club was once, indeed, a country club, or at least part of it was.
Moses's all-at-once compositions are indeed modern.
To visit Montreal is to see at once that Quebec is indeed the "distinct society" it claims to be.
Creatures are thus themselves real with the limited sort of independence they manifest, yet they are at once in God and indeed one with God without being themselves divine.
When the two men meet, it is at once apparent that they are indeed doubles -- that is, they not only look alike, but are identical, down to the moles on their forearms and the date of their birth.
As the episode, the season and the series come to a close, SG-1 contemplates Teal'c's joking words of wisdom in the gateroom and says "indeed" all at once.
What then remains of the Colonial Office should certainly be renamed; it should indeed be renamed at once, for the name does not describe its modern functions, and perpetuates prejudice needlessly.
He was a proud American, as well as a Jew; a robustly bloody-minded talent, such as his, would have known at once that fiction insists on freedom: indeed, fiction is freedom, and freedom is indivisible (hence, later on, his passionate support for the writers of Czechoslovakia).
