The antonyms for the word "art parsimonious" are lavish, generous, abundant, prodigal, plentiful, bountiful, and extravagant. While parsimonious denotes a person who is extremely careful with their money and resources, lavish is the exact opposite which stands for a person who is generous and lavish in their spending. Generous, abundant, and prodigal are also antonyms which are used to describe ample, large, and excessive amounts of something. Bountiful antonym is used to describe something that is more than enough, in contrast to being scanty. Finally, extravagant is the antonym for frugal which justifies spending money or resources unreasonably or wastefully.