Start and Tossup

Start

Start noun - The point at which something begins.

Tossup is an antonym for start.

Tossup

Tossup noun - An unpredictable phenomenon.

Start is an antonym for tossup in something that probably will happen topic.
Cite this Source
Tossup and Start. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/start/tossup
Start & Tossup. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/start/tossup>.
Tossup or Start. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/start/tossup.
Google Ngram Viewer shows how "start" and "tossup" have occurred on timeline