Echo Word formation is one of the Productive processes of word formation in Bodo. In Bodo echo word formation process, two types of base word – free form base word or stem and bound form base words are found. The free form base word sometime changed their class. The echo word of the language is formed by replacing of phoneme or syllable or adding a phoneme in the initial position in the reduplicated word. The replacing phoneme may be vowel phoneme or consonant phoneme. The echo words in this language represent the meaning of plurality, and the like and sometime form to represent a new concept.