chol·er (kŏlər, kōlər)
1. Anger; irritability.
a. One of the four humors of ancient and medieval physiology, thought to cause anger and bad temper when present in excess; yellow bile.
b. Obsolete The quality and condition of being bilious.
[Middle English colre, from Old French, from Latin cholera, cholera, jaundice, from Greek kholera, from kholē, bile; see ghel-2 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.