Prodigious (adjective)
pro·di·gious | \ prə-ˈdi-jəs
1.causing amazement or wonder
2.extraordinary in bulk, quantity, or degree: ENORMOUS.
In the text, “A Literary Visitor Strolls In From the Airport” By Charles McGrathdec, the author states, “He used to be a prodigious drinker and drug-taker, famous for late-night altercations, not always coherent public appearances and marathon hours at trendy spots like Groucho Club.”
In this sentence, the author used the word “prodigious” to describe the amount of alcohol that Will Self used to consume. Self-consumed a large quantity of alcohol and which made him a prodigious drinker.