1. Easily influenced or affected: Is he susceptible to persuasion? I'm very susceptible to colds.
2. Especially sensitive; highly impressionable: a susceptible child.
3. Permitting an action to be performed; capable of undergoing something: a statement susceptible of proof; a disease susceptible to treatment.
[Late Latin susceptibilis, from Latin susceptus, past participle of suscipere, to receive : sub-, from below; see SUB- + capere, to take; see kap- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.