n. pl. sim·plic·i·ties
1. The property, condition, or quality of being simple or uncombined.
2. Absence of luxury or showiness; plainness.
3. Absence of affectation or pretense.
a. Lack of sophistication or subtlety; naiveté.
b. Lack of good sense or intelligence; foolishness.
a. Clarity of expression.
b. Austerity in embellishment.
[Middle English simplicite, from Old French, from Latin simplicitās, from simplex, simplic-, simple; see sem-1 in the Appendix of Indo-European roots.]
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.