At once
At once adverb - Without delay or hesitation; with no time intervening.
Without delay is a synonym for at once in immediately topic. In some cases you can use "Without delay" instead the phrase "At once" as an adverb or an adjective or a interjection, when it comes to topics like quickly, instantly, right now. popular alternative
Without delay
At once is a synonym for without delay in immediately topic. You can use "At once" instead the phrase "Without delay" as an adverb or an adjective or a interjection, if it concerns topics such as quickly, instantly, right now. popular alternative
Mutual synonyms
Related pairs
- immediately and at once
- immediately and without delay
- directly and at once
- directly and without delay
- straight away and at once
- straight away and without delay
- quickly and at once
- quickly and without delay
- speedily and at once
- speedily and without delay
- promptly and at once
- promptly and without delay
- abruptly and at once
- abruptly and without delay
Cite this Source
Without delay and At once. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/at_once/without_delay
At once & Without delay. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/at_once/without_delay>.
Without delay or At once. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/at_once/without_delay.
Google Ngram Viewer shows how "at once" and "without delay" have occurred on timeline