The paper discusses in detail echo formations and expressives found in the Odia language and the strategies for forming them. The complex semantic structure as well as the wide semantic and conceptual space they occupy, make them complex categories that have been ignored both by Western and Asian linguists because they are a prototypical grammatical feature not fitting the traditional grammar writing (Abbi, 2018). Odia has morphological fixed segmentism with the variants /ph/ and /m/. Morphological fixed segmentism is a kind of affixation, and so it resembles affixing morphology generally. [ɡaɽɪ > ɡaɽɪ phaɽɪ ‘car and other transport’ ; ʧɪra > ʧɪra mɪra ‘ torn and such’ ] This paper endeavours to find the reason behind this particular choice of phonemes by Odia speakers. Furthermore, the paper investigates if Odia base-reduplicant structures follow the Syllable Contact Law (Vennemann, 1988). According to the Syllable Contact Law, sonority should fall across syllable boundaries. This paper proves that Odia base-reduplicant structures follow the Syllable Contact Law as rise in sonority across syllable boundaries is a marked feature in Odia.’