Here are some examples of words using this suffix:
* Mania: excessive enthusiasm or excitement
* Hydria: excessive thirst
* Pyromania: excessive interest in fire
* Kleptomania: excessive urge to steal
* Megalomania: excessive sense of power or importance
While "-ia" is the most common suffix for excessive, there are other suffixes that can also indicate excess, such as -osis (e.g., psychosis, neurosis), -ism (e.g., alcoholism, sexism) and -itis (e.g., gastritis).