1. Pursuit of or devotion to pleasure, especially to the pleasures of the senses.
2. Philosophy The ethical doctrine holding that only what is pleasant or has pleasant consequences is intrinsically good.
3. Psychology The doctrine holding that behavior is motivated by the desire for pleasure and the avoidance of pain.
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.