Upper-Intermediate (B2)
IPA: /ɪnˈsʌsɛptəbl/
KK: /ɪnˈsʌsɛptəbl/
Definition
Not able to be affected or influenced by something.
Example
She is insusceptible to peer pressure and always makes her own choices.
Conversation

Do you think anyone is insusceptible to peer pressure?

Not really, I think everyone feels it at some point.

Yeah, but I wish I could be more insusceptible to it.

That would be great, it would make things a lot easier!
Synonyms & Antonyms
Synonyms
immune
resistant
unaffected
Antonyms
susceptible
vulnerable
exposed
Root Explanation
Insusceptible → It is formed from "in-" (meaning not) and "susceptibilis" (from Latin, meaning able to receive or susceptible). The word "insusceptible" means not able to be influenced or affected by something.
Memory Tip
Think of 'not' ('in-') being able to be 'received' ('susceptibilis') — that's why insusceptible means not able to be influenced.
Visually Confused Words
unsusceptible
susceptible
unsusceptibly
susceptibly
presusceptible
indiscerptible
unsusceptive
unsusceptibleness