adjective
showing self-restraint or abstention from indulgence
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The abstentious nature of the monk was evident in his strict adherence to his vow of silence.
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She's always been a bit abstentious when it comes to junk food, preferring to stick to a healthy diet.
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My friend is so abstentious, she won't even have a sip of beer at a party.
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The artist's abstentious approach to painting left viewers intrigued by the empty spaces on the canvas.