One and only and One

One and only

One and only adjective - Eminent beyond or above comparison.

One is a synonym for one and only in singular topic. In some cases you can use "One" instead an adjective phrase "One and only", when it comes to topics like alone. popular alternative

One

One adjective - Eminent beyond or above comparison.
Usage example: she's one girl in a million

One and only is a synonym for one in individual topic. You can use "One and only" instead an adjective "One". popular alternative
Cite this Source
One and One and only. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/one_and_only/one
One and only & One. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/one_and_only/one>.
One or One and only. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/one_and_only/one.