Antonyms of adj abstentious

1 sense of abstentious

Sense 1
abstinent, abstentious -- (self-restraining; not indulging an appetite especially for food or drink; "not totally abstinent but abstemious")

INDIRECT (VIA abstemious) -> gluttonous -- (given to excess in consumption of especially food or drink; "over-fed women and their gluttonous husbands"; "a gluttonous debauch"; "a gluttonous appetite for food and praise and pleasure")

Similarity of adj abstentious

1 sense of abstentious

Sense 1
abstinent, abstentious -- (self-restraining; not indulging an appetite especially for food or drink; "not totally abstinent but abstemious")
       => abstemious (vs. gluttonous) -- (sparing in consumption of especially food and drink; "the pleasures of the table, never of much consequence to one naturally abstemious"- John Galsworthy)