At once and Singly

At once

At once adverb - Without delay or hesitation; with no time intervening.

Singly is an antonym for at once.

Singly

Singly adverb - Without aid or support.

At once is an antonym for singly.

Nearby Word: single
Cite this Source
Singly and At once. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/at_once/singly
At once & Singly. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/at_once/singly>.
Singly or At once. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/at_once/singly.
Google Ngram Viewer shows how "at once" and "singly" have occurred on timeline