What does inexpugnable mean?
Inexpugnable is a formal adjective meaning that something cannot be conquered, overrun, overcome, or dislodged. It is often used to describe castles, fortresses, defensive positions, and other strongholds, where the word emphasizes the impossibility of taking the place by force. Figuratively, it can refer to principles, institutions, or personal convictions that are so firmly established that they withstand opposition. The word has a highly formal, elevated tone and is less common in everyday conversation than synonyms such as impregnable or unassailable. In a sentence, it suggests not merely that resistance would be difficult but that the thing described is, in principle or by its nature, beyond conquest. Its unusual sound and its clear implication of enduring strength make it especially effective in historical and political writing.
adjectiveIncapable of being conquered, overrun, or overcome. It is used especially for fortifications, positions, or principles that cannot be defeated or dislodged.
- Incapable of being conquered, overrun, or overcome, especially by military force.
- Too firmly established or secure to be dislodged, defeated, or overturned.
"Despite repeated attacks, the defenders held their inexpugnable stronghold."
"The mountain fortress seemed inexpugnable, and the attackers withdrew without making progress."
"Her commitment to democratic principles remained inexpugnable despite years of political pressure."
Inexpugnable comes from Latin for 'not capable of being conquered': a word built to describe a defence that simply refuses to fall.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inexpugnable come from?
The word comes from Latin inexpugnabilis, formed from the negative prefix in- and expugnare, 'to conquer by assault.' The related English word expugnable means liable to be conquered, while expugnation refers to the act of overcoming or conquering by force. Inexpugnable entered English in the early 17th century and has retained its strongly formal character.
Related word forms
How inexpugnable is actually used
This is a formal and literary word. It is more common in historical, political, and figurative contexts than in everyday speech, where impregnable or impossible to defeat may sound more natural.
Easily confused with inexpugnable
Both describe something that cannot be overcome, but impregnable is especially common for defences and fortifications, whereas inexpugnable is more formal and can also describe abstract principles or positions.