Answer: so great that he didn't comprehend the nature of the agreement he was entering into.
Step-by-step explanation:
An intoxicated person simply refers to someone who is under contractual incapacity due to the fact that there's ingestion of drugs or alcohol which brought about incompetence.
In order for someone to avoid a contract on the grounds of intoxication, the level of intoxication has to be so great that the person can't comprehend the nature of the agreement he or she was entering into.