Abstinent

ab·sti·nence  (bst-nns)

n.

1. The act or practice of refraining from indulging an appetite, as for food.

2. Abstention from alcoholic beverages.

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[Middle English, from Old French abstenance, from Latin abstinentia, from abstinns, abstinent-, present participle of abstinre, to hold back; see abstain.]

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absti·nent adj.

absti·nent·ly adv.

Synonyms: abstinence, self-denial, temperance, sobriety, continence
These nouns refer to restraint of one's appetites or desires. Abstinence implies the willful avoidance of pleasures, especially of food and drink, thought to be harmful or self-indulgent: "I vainly reminded him of his protracted abstinence from food" Emily Brontë.
Self-denial suggests resisting one's own desires for the achievement of a higher goal: I practiced self-denial to provide for my family's needs.
Temperance refers to moderation and self-restraint and sobriety to gravity in bearing, manner, or treatment; both nouns denote moderation in or abstinence from the consumption of alcoholic liquor: Teetotalers preach temperance for everyone. "those moments which would come between the subsidence of actual sobriety and the commencement of intoxication" Anthony Trollope.
Continence specifically refers to abstention from sexual activity: The nun took a vow of continence.

Thesaurus

Noun	1.	abstinent - a person who refrains from drinking intoxicating beverages nondrinker, abstainer individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do" teetotaler, teetotalist, teetotaller - a total abstainer
Adj.	1.	abstinent - self-restraining; not indulging an appetite especially for food or drink; "not totally abstinent but abstemious" abstentious abstemious - sparing in consumption of especially food and drink; "the pleasures of the table, never of much consequence to one naturally abstemious"- John Galsworthy