Meaning of suppletive

sup•ple•tive

Pronunciation: (su-plē'tiv, sup'li-tiv), [key]
— adj. Gram.
  1. serving as an inflected form of a word with a totally different stem, as went, the suppletive past of go.
  2. including one or more such forms: a suppletive paradigm.
  3. characterized by the use of such forms: suppletive inflection.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.