intr.v. moped, mop·ing, mopes
1. To think gloomily and persistently about something; be dejected. See Synonyms at brood.
2. To move in a listless or aimless manner, especially from being sad or depressed: moped about the house all summer.
1. A person given to gloomy or dejected moods.
2. mopes Low spirits; the blues. Often used with the.
mopish, mopey adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 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.