va·cu·i·ty (vă-kyĭ-tē, və-)
n. pl. vac·u·i·ties
1. Total absence of matter; emptiness.
2. An empty space; a vacuum.
3. Total lack of ideas; emptiness of mind.
4. Absence of meaningful occupation; idleness: "the crew, being patient people, much given to slumber and vacuity" (Washington Irving).
5. The quality or fact of being devoid of something specified: a vacuity of taste; a vacuity of emotions.
6. Something, especially a remark, that is pointless or inane: a conversation full of vacuities.
[Middle English vacuite, from Old French, from Latin vacuitās, from vacuus, empty; see VACUUM.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.