efficious

English

Etymology

Possibly a variation of efficacious or derivative of efficacy influenced by analysis of the final -c- in the later word as being part of a suffix -cy rather than the word-stem.

Adjective

efficious (comparative more efficious, superlative most efficious)

1. (rare, nonstandard) Efficacious.
   • 1770, The Memoirs of Miss Arabella Bolton. Containing a Genuine Account, page 81:

     Had she not been cured at Oxford, no imputation could have fallen upon me, considering the circumstance of her pregnancy, and the virulence of the symptoms, for which I had used the most efficious remedies in the world.

   • 1899, The Carolina Medical Journal, volumes 43-44, page 207, quoting the Medical Standard:

     This remedy will be found speedily efficious in hoarseness due to excessive action of the vocal cords or resulting from an acute cold.

   • 1991 September 1, DW Rudy, JR Voelker, PK Greene, FA Esparza, DC Brater, “Loop diuretics for chronic renal insufficiency: a continuous infusion is more efficacious than bolus therapy”, in Ann. Intern. Med., 115(5):
   • 2016, T. K. Lim, Edible Medicinal and Non-Medicinal Plants, volume 12:

     [...] was found to be efficious in reducing pain and severity of swelling (Laupattarakasem et al. 1993).