Excessive
Part of speech: adjective
Definition: Exceeding the usual bounds of something; extravagant; immoderate.
Example sentence: Cancer cells are fixed at an age where they are still too young to have learned the rules of the society in which they live. As with so many immature individuals of all living kinds, everything they do is excessive and uncoordinated with the needs or constraints of their neighbors... they are reproductive but not productive.
Undue
Part of speech: adjective
Definition: Excessive; going beyond that what is natural or sufficient.That which ought not to be done; illegal; unjustified.Not owing or payable.