English Reference
adjective · noun

susceptible

adj. · n.
US /səˈsɛptəbəɫ/ UK /səsˈɛptəbəl/ sus·cep·ti·ble

  1. 01 C1 Advanced Technical Medicine

    adj.likely to be affected by a particular disease or medical condition.

    adj.yielding readily to a pathogen or medical condition; lacking immunity or resistance.

    Simple

    Older people are often more susceptible to the flu during the winter months.

    In context

    Patients with compromised immune systems remain highly susceptible to opportunistic infections that healthy individuals would easily repel.

    Usage

    Usually followed by the preposition 'to'.

  2. 02 C1 Advanced Formal

    adj.easily influenced or affected by emotions or other people's ideas.

    adj.easily influenced by feelings, suggestions, or the persuasive efforts of others.

    Simple

    He was very susceptible to flattery and believed everything his boss told him.

    In context

    The advertisement was specifically designed to target young consumers who are often more susceptible to social pressure and trend-driven marketing.

    Usage

    Usually followed by the preposition 'to'.

    impressionablesuggestiblecredulous
  3. 03 C2 Proficiency AcademicFormal

    adj.able to be treated, changed, or understood in a certain way.

    adj.capable of undergoing a specific process or being interpreted in a particular manner.

    Simple

    The problem is susceptible to a simple solution if we look at the data.

    In context

    The poet's later works are susceptible to various interpretations, depending on the reader's understanding of the historical context.

    Usage

    Usually followed by the preposition 'to'.

    amenableopencapable of
  4. 04 C2 Proficiency Technical Medicine

    n.a person who is likely to catch a disease because they have no protection against it.

    n.an individual within a population who lacks immunity to a specific infectious agent.

    Simple

    The goal of the vaccine is to protect the susceptibles in the community.

    In context

    Epidemiologists track the ratio of susceptibles to immune individuals to predict how quickly a virus might spread through a city.

    at risk person

Usage particularly susceptible · susceptible to

Likewise, water shortages and stress from high temperatures, salinity and hypoxia can make hosts more susceptible to infection.

Phys.org· 16 Aug 2026

While mange affects well-cared-for household pets at low rates, occurrence among unvaccinated shelter dogs and strays can top 26%, and dogs of all ages, breeds and sexes are susceptible.

Phys.org· 15 Aug 2026

From Late Latin susceptibilis, from Latin susceptus, from suscipiō.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Latin susceptus
Level C1 · Advanced
Frequency Frequent
Updated