adj. 1. Existing in great quantity or ample supply. 2. Providing or producing an abundance: settlers moving to a more plentiful region. plenti·ful·ly adv. plenti·ful·ness n. 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. Antonym: scant |
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