IPA: /ˈbɪb.jə.ləs.nəs/
KK: /ˈbɪb.jə.ləs.nəs/
A strong tendency to drink alcohol excessively.
His bibulousness often led to wild parties and late nights.
Bibulousness → It is formed from "bibulous" (from Latin "bibulus", meaning fond of drinking) and the suffix "-ness" (meaning the state or quality of). The word "bibulousness" refers to the quality of being excessively fond of drinking, especially alcoholic beverages.
Think of someone who is 'fond of drinking' ('bibulous') — the '-ness' indicates a state, so bibulousness means the state of being fond of drinking.