a. Disinclined to exert oneself; habitually lazy. See Synonyms at lazy.
b. Conducive to inactivity or laziness; lethargic: humid, indolent weather.
a. Causing little or no pain: an indolent tumor.
b. Slow to heal, grow, or develop; inactive: an indolent ulcer.
[Late Latin indolēns, indolent-, painless : Latin in-, not; see IN-1 + Latin dolēns, present participle of dolēre, to feel pain.]
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.