IRREVERENT
godless, irreverent
(adjective) not revering god
irreverent
(adjective) showing lack of due respect or veneration; “irreverent scholars mocking sacred things”; “noisy irreverent tourists”
impertinent, irreverent, pert, saucy
(adjective) characterized by a lightly pert and exuberant quality; “a certain irreverent gaiety and ease of manner”
Source: WordNet® 3.1
Etymology
Adjective
irreverent (comparative more irreverent, superlative most irreverent)
Lacking respect; not having or not showing respect for or seriousness towards something that is usually treated with respect; going against conventional precepts.
Synonyms
• impertinent
• insolent
• flippant
• pert
• See also cheeky
Source: Wiktionary
Ir*rev"er*ent, a. Etym: [L. irreverens, -entis: cf. F. irrévérent.
See In- not, and Reverent.]
Definition: Not reverent; showing a want of reverence; expressive of a want
of veneration; as, an irreverent babbler; an irreverent jest.
Source: Webster’s Unabridged Dictionary 1913 Edition