Number one
Number one noun - The first or highest in an ordering or series.
One-off and number one are semantically related. In some cases you can use "One-off" instead a noun phrase "Number one".
One-off
One-off noun - A happening that occurs only once and is not repeated.
Number one and one-off are semantically related. Sometimes you can use "Number one" instead a noun phrase "One-off".
Both terms in one sentence
- In Majin Tantei Nougami Neuro, Neuro frequently calls his human assistants "servant number one" and "servant number two" (along with a lot more one-off insults).
Source: Insult of Endearment
Cite this Source
One-off and Number one. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/number_one/one-off
Number one & One-off. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/number_one/one-off>.
One-off or Number one. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/number_one/one-off.