An inordinate amount means more than what's reasonable or necessary. You can think of it as something that's too much.
When we talk about something being excessive or unreasonable, we often use the word "inordinate". For example, an inordinate number of complaints might be pouring into a company's customer service department, implying that there are just too many issues to handle. In this sense, "inordinate" refers to something that exceeds what's considered normal or acceptable.
Excessive; unreasonable or inappropriate in magnitude; extreme.
