What does insusceptible mean?
Insusceptible is a formal adjective meaning not susceptible to something: unaffected by a particular influence, condition, or attack. A person described as insusceptible to persuasion may be difficult or impossible to convince, while a material that is insusceptible to damage can withstand wear, pressure, or environmental stress. The word is also used in medical and scientific contexts, as in “insusceptible to infection,” where it indicates resistance rather than complete immunity. Its construction is usually “insusceptible to” plus a noun or noun phrase. Although it can sound formal or literary, it is clear and useful when describing something that remains unaffected despite an outside force. In conversation, alternatives such as resistant, immune, or unaffected may sound more natural, depending on the intended degree and context.
adjectiveNot susceptible to something; unaffected by a particular influence, condition, or attack. It can describe someone or something that is resistant to persuasion, disease, damage, or another external influence.
- Unaffected by or resistant to a particular influence, condition, or attack.
"Her calm temperament made her insusceptible to the emotional pressure of the competition."
"The device is insusceptible to ordinary weather changes."
"Despite the persuasive argument, he remained insusceptible to the idea of buying a new car."
What resists influence, illness, or damage? The word insusceptible names the remarkable ability to remain unaffected.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does insusceptible come from?
Insusceptible was formed in English with the prefix in-, meaning “not,” attached to susceptible. Both words ultimately derive from Latin suscipere, meaning “to take up” or “receive,” through the idea of being able to receive or be affected by something. The development of susceptible and its negative counterpart reflects a long-standing contrast between receiving an influence and remaining protected from it.
Related word forms
How insusceptible is actually used
The word is formal and often slightly literary. It is normally used in the pattern “insusceptible to” followed by an influence, condition, or effect.
Easily confused with insusceptible
Insusceptible means resistant to an influence or condition, whereas incredulous means unwilling to believe or accept something.
Insusceptible is a broader term for being unaffected by something, while immune most often means protected against a disease or immune-system response.