I was reading the thoroughly enjoyable On Royalty by Jeremy Paxman tonight and came across this word:
Etymology: Latin abstemius, from abs- + -temius; akin to Latin temetum intoxicating drink
: marked by restraint especially in the consumption of food or alcohol ; also : reflecting such restraint .. an abstemious diet ..
— ab·ste·mi·ous·ly adverb
— ab·ste·mious·ness noun
So, obviously linked to abstinence. I will attempt to shoehorn this word into conversation this coming week!