Secure
Secure adjective - Not exposed to the threat of loss or injury.
Usage example: the fortress was thought to be secure against attack
Vulnerable is an antonym for secure.
Vulnerable
Vulnerable adjective - Lacking protection from danger or resistance against attack.
Usage example: vulnerable baby chicks
Nearby Words: vulnerability, vulnerably
Both words in one sentence
- Roughly 370 years ago, the Xilian Empire felt secure after conquering several planets and stopped focusing on their military, leaving their homeworld vulnerable when Grand King Ghidorah attacked it.
Source: We Have Become Complacent -
To be fair, no one could expect the royal chambers to be vulnerable to any but the most daring and skillful of thieves, but surely there were more secure places to put it... right?
Source: Disney / Robin Hood - Those powers can only belong to one generation, so if one of the mages has children, they all begin to lose their powers and die (unless they can secure some auxiliary magic source, but even they are vulnerable, whereas before they just re-spawned if killed).
Source: Birth/Death Juxtaposition
Cite this Source
Vulnerable and Secure. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/secure/vulnerable
Secure & Vulnerable. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/secure/vulnerable>.
Vulnerable or Secure. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/secure/vulnerable.
Google Ngram Viewer shows how "secure" and "vulnerable" have occurred on timeline