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A reduplicative is a word or lexeme that contains two identical or very similar parts.It can be thought as compound word formation.The second part is identical with the first,like-- pooh-pooh, or repeats the first part.
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thank you man
ur welcome Cvschaitanya
Reduplicative words are words in which  the second part is identical to the first "pooh-pooh" or repeats the first part with a change of vowel "riff-raff" or of consonant "teeny-weeny" 
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