One and only and Significant other

One and only

One and only adjective - Eminent beyond or above comparison.

Significant other and one and only are semantically related. in someone adored topic. In some cases you can use "Significant other" instead a noun phrase "One and only", when it comes to topics like person whom another loves.

Significant other

Significant other noun - The person to whom another is married.

One and only and significant other are semantically related. Sometimes you can use "One and only" instead a noun phrase "Significant other".
Cite this Source
Significant other and One and only. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/one_and_only/significant_other
One and only & Significant other. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/one_and_only/significant_other>.
Significant other or One and only. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/one_and_only/significant_other.