Impregnable (Adjective)

Meaning ¹

Immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection".

Classification

All adjective clusters.

Synonyms

• Secure
• Strong
• Inviolable
• Unassailable
• Unattackable

Related Words

• Impregnability (noun)

Meaning ²

Capable of conceiving.

Classification

All adjective clusters.

Synonyms

• Conceptive

Meaning ³

Incapable of being overcome, challenged or refuted; "an impregnable argument"; "impregnable self-confidence".

Classification

All adjective clusters.

Synonyms

• Inexpugnable