Optional extra
Partner and optional extra are semantically related. In some cases you can use "Partner" instead a noun phrase "Optional extra".
Partner
Partner noun - The person to whom another is married.
Optional extra and partner are semantically related. Sometimes you can use "Optional extra" instead a noun "Partner".
Cite this Source
Partner and Optional extra. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/optional_extra/partner
Optional extra & Partner. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/optional_extra/partner>.
Partner or Optional extra. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/optional_extra/partner.
Google Ngram Viewer shows how "optional extra" and "partner" have occurred on timeline