ಅರ್ಥ : Immune to attack. Incapable of being tampered with.
							ಉದಾಹರಣೆ : 
							An impregnable fortress.
							Fortifications that made the frontier inviolable.
							A secure telephone connection.
							
ಸಮಾನಾರ್ಥಕ : inviolable, secure, strong, unassailable, unattackable
ಅರ್ಥ : Capable of conceiving.
ಸಮಾನಾರ್ಥಕ : conceptive
ಅರ್ಥ : Incapable of being overcome, challenged or refuted.
							ಉದಾಹರಣೆ : 
							An impregnable argument.
							Impregnable self-confidence.
							
ಸಮಾನಾರ್ಥಕ : inexpugnable