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Related to unsusceptible: insusceptible
unsusceptible to (something)
1. Not easily influenced or impressed by something. The mayor has proven unsusceptible to bribery, so we'll need to find another way of getting around him. You'll find that the board of directors is unsusceptible to persuasion once they have made a decision.
2. Not liable to contract or be afflicted by something. No matter how much you exercise or how good your diet may be, no person is 100% unsusceptible to the various diseases and infections of the world. Children, the elderly, and people with compromised immune systems are especially susceptible to the 'flu, so we always recommend that they receive a vaccination each year heading into winter.
3. Not very sensitive to or easily irritated by something. The strong medication ended up damaging the lining in my stomach, making me very susceptible to alcohol and spicy food. Regular brushing and flossing, as well as avoiding sugary foods, will help make your teeth unsusceptible to tooth decay.
4. Not admitting, yielding readily to, or capable of some specific treatment. The damage to my nerves has left large portions of my skin unsusceptible to pain. By the very nature of fiction, no novel is unsusceptible to unique and varying interpretations.
See also: unsusceptible
unsusceptible of (something)
Not admitting, yielding readily to, or capable of something. I'm afraid the cancer has spread to his bones, so it has become unsusceptible of treatment. By the very nature of fiction, no novel is unsusceptible of unique and varying interpretations. I refuse to entertain such conspiracy theories that are unsusceptible of basic scientific evidence!