1. the act of drinking alcoholic beverages to excess

e.g. drink was his downfall

Synonym: drinkdrinkingboozingcrapulence

2. a temporary state resulting from excessive consumption of alcohol

Synonym: inebriationinebrietyintoxicationtipsinessinsobriety

3. habitual intoxication
prolonged and excessive intake of alcoholic drinks leading to a breakdown in health and an addiction to alcohol such that abrupt deprivation leads to severe withdrawal symptoms

Synonym: alcoholismalcohol addictioninebriation