abstinent

/หˆรฆb.stษ™.nnฬฉt/
adjective
  1. 1

    Refraining from indulgence, especially from the indulgence of appetite.

noun
  1. 1

    One who abstains; a faster.

  2. 2

    (usually capitalized) One of a sect who appeared in France and Spain in the 3rd century, and believed in abstinence towards meat and sex.

Source: https://en.wiktionary.org/wiki/abstinent