Excessively; too much; too: used independently instead of the usual over- in composition: as, not overly good; overly particular.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. to a degree exceeding normal or proper limits
Word Usage
"Mr. Christie repeatedly uses the example of his own health-care package, which he calls overly generous, as an example of why public employees need to pay more for their health care."