Lush

SOT

["This term describes someone who drinks to excess, often appearing in older literature as a disheveled or habitually intoxicated figure. Think of a three-letter word for a heavy drinker."]

"Lush" here isn’t about greenery—it’s slang for someone who drinks too much alcohol. The answer "SOT" is an old-fashioned term for a habitual drunkard, making it a direct synonym. Think of it like calling a heavy drinker a "boozehound" or "rummy," just with a more archaic twist. The clue plays on the double meaning of "lush" to mislead at first glance.