1. Not physically sensitive; numb.
a. Lacking in sensitivity to the feelings or circumstances of others; unfeeling.
b. Indifferent or inattentive: insensitive to the needs of the customers.
3. Not readily responsive to external influence or stimulation: a commodity price that is insensitive to fluctuations in demand.
in·sen′si·tivi·ty, in·sensi·tive·ness n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.