"abstemious" in the adjective sense
1. abstemious
sparing in consumption of especially food and drink
"the pleasures of the table, never of much consequence to one naturally abstemious"- John Galsworthy
2. abstemious, light
marked by temperance in indulgence
"abstemious with the use of adverbs"
"a light eater"
"a light smoker"
"ate a light supper"
Source: WordNet® (An amazing lexical database of English)
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