Example Sentences:

Ramayana:  Ravana’s face had a smug look as his demons set Hanuman’s tail on fire, but that look quickly changed to shock when Hanuman escaped and used that same burning tail to set Lanka on fire.

Mahabharata:  On seeing the smug smile on Duryodhana’s face as Shakuni won round after round in the gambling match, Bhima felt a violent urge to smash Duryodhana’s face.

Bhagavad-gita:  Those who are smug can’t become spiritual because they get stuck at the doorway to spirituality, which is humility.