A person who regularly drinks too much alcohol and is often drunk.
From Old English 'sot,' possibly related to Old Norse 'sútr' or Latin 'situs' (intoxicated); the exact origin is uncertain but appears in English by the 14th century.
Medieval literature is full of 'sots'—the word's harsh sound makes it perfect for comic characters, and it's rarely used seriously anymore, which shows how language softens our judgments over time.
Complete word intelligence in one call. Free tier — 50 lookups/day.