Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Existing in great quantity or ample supply.
  • adj. Providing or producing an abundance: a plentiful harvest.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Existing in large number or ample amount.
  • adj. Yielding abundance; fruitful.
  • adj. lavish; profuse; prodigal

from the GNU version of the Collaborative International Dictionary of English

  • adj. Containing plenty; copious; abundant; ample
  • adj. Yielding abundance; prolific; fruitful.
  • adj. Lavish; profuse; prodigal.

from The Century Dictionary and Cyclopedia

  • Existing in great plenty; copious; abundant; ample.
  • Yielding abundance; affording ample supply; fruitful.
  • Lavish.
  • = Syn.1 and Profuse, luxuriant. Plentiful is essentially the same as plenteous. See comparison under ample.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. existing in great number or quantity
  • adj. affording an abundant supply
  • adj. producing in abundance

Etymologies

From plenty +‎ -ful. (Wiktionary)

Examples

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