abstinent

nouns

a person who refrains from drinking intoxicating beverages
abstainer, abstinent, nondrinker
is derived from
abstain

adjectives

self-restraining; not indulging an appetite especially for food or drink
"not totally abstinent but abstemious"
abstentious, abstinent
is derived from
abstinence
is derived from
abstinence
is derived from
abstain