At once and By return

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mutual synonyms

At once

At once adverb - Without delay or hesitation; with no time intervening.
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Synonyms for At once
Antonyms for At once
By return and at once are semantically related. In some cases you can use "By return" instead an adverb phrase "At once".

By return

Definitions of At once not found.
Synonyms for By return
At once and by return are semantically related. You can use "At once" instead an adverb phrase "By return".

Mutual synonyms

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Cite this Source
By return and At once. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/at_once/by_return
At once & By return. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/at_once/by_return>.
By return or At once. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/at_once/by_return.

Synonyms for at once


Synonyms for by return

Google Ngram Viewer shows how "at once" and "by return" have occurred on timeline