1. Lacking piety or reverence for a god 
2. Lacking due respect or dutifulness
   "impious toward one's parents"
   - undutiful

See also: disrespectful, godless, impiously, impiousness, irreligious, irreverent, piety, piousness, profane, secular, wicked

Antonym: pious

Encyclopedia: Impious

• readably
• readapt
• readdress
• reader
• readership
• readily
• readiness
• reading
• reading assignment
• reading clinic
• reading desk
• reading lamp
• reading material
• reading program
• reading room
• reading teacher
• readjust
• readjustment
• readmission
• readmit
• readopt
• readout
• ready
• ready and waiting
• ready cash