Definition: word form or crude base, ending with an affix of the uṇ class, which is looked upon as practically underived, the affixes un and others not being looked upon as standard affixes applied with regular meanings attached to them and capable of causing operations to the preceding base as prescribed by rules of grammar; cf. उणादयोS व्युत्पन्नानि प्रातिपदिकानि । व्युत्पन्नानीति शाकटायनरीत्या । पाणिनेस्त्वव्युत्पत्तिपक्ष एवेति शब्देन्दुशेखरे निरूपितम्. Pari. Śek. on Paribhāṣa 22.