(adv) in an irreverent manner, Example:in the seventeenth century England had known fifty years of doctrinal quarrels and civil war; clergymen had been turned from their cures, and churches irreverently used
The Collaborative International Dictionary of English (GCIDE) v.0.53 Collaborative International Dictionary (GCIDE)
a. [ L. irreverens, -entis: cf. F. irrévérent. See In- not, and Reverent. ] Not reverent; showing a lack of reverence; expressive of a lack of veneration; as, an irreverent babbler; an irreverent jest. [ 1913 Webster ]