Accessorial and All-important

Accessorial

Accessorial adjective - Available to supply something extra when needed.
Usage example: an accessorial service, such as packing, will add substantially to the moving company's basic fee

All-important is an antonym for accessorial.

All-important

All-important adjective - Impossible to do without.

Accessorial is an antonym for all-important.
Cite this Source
All-important and Accessorial. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/accessorial/all-important
Accessorial & All-important. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/accessorial/all-important>.
All-important or Accessorial. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/accessorial/all-important.