1. Existing in great quantity or ample supply.
2. Providing or producing an abundance: settlers moving to a more plentiful region.
Synonyms: plentiful, abundant, ample, copious, plenteous
These adjectives mean being fully as much as one needs or desires: a plentiful supply; the artist's abundant talent; ample space; copious provisions; a plenteous crop of wheat.
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.