verb (used with object), reduplicated, reduplicating.
to double; repeat.
Grammar. to form (a derivative or inflected form) by doubling a specified syllable or other portion of the primitive, sometimes with fixed modifications, as in Greek léloipa “I have left,” leípo “I leave.”.
verb (used without object), reduplicated, reduplicating.
1560s, from Medieval Latin reduplicatus, past participle of reduplicare "to redouble," from re- "back, again" (see re-) + Latin duplicare "to double" (see duplicate (adj.)). Related: Reduplicated; reduplicating; reduplicative.