reduplicate

/R AH0 D UW1 P L AH0 K EY0 T/
verb
  1. 1

    To double again: to multiply: to repeat.

  2. 2

    To repeat (a word or part of a word) in order to form a new word or phrase, possibly with modification of one of the repetitions.

adjective
  1. 1

    Doubled

  2. 2

    Valvate with the margins curved outwardly

  3. 3

    Folded, with the abaxial surfaces facing one another

Source: https://en.wiktionary.org/wiki/reduplicate