Definition: lit. doer of an action. The word is used in the technical sense; 1 of ’instrument of action'; cf कारकशब्दश्च निमित्तपर्यायः । कारकं हेतुरिति नार्थान्तरम् । कस्य हेतुः । क्रियायाः Kāś. on P.I. 4.23: cf. also कारक इति संज्ञानिर्देशः । साधकं निर्वर्तकं कारकसंज्ञं भवति । M.Bh. on P. I. 4.28. The word 'kāraka' in short, means 'the capacity in which a thing becomes instrumental in bringing about an action'. This capacity is looked upon as the sense of the case-affixes which express it. There are six kārakas given in all grammar treatises अपादान, संप्रदान, अधिकरण, करण, कर्मन् and कर्तृ to express which the case affixes or Vibhaktis पञ्चमी, चतुर्थी, सप्तमी, तृतीया, द्वितीया and प्रथमा are respectively used which, hence, are called Kārakavibhaktis as contrasted with Upapadavibhaktis, which show a relation between two substantives and hence are looked upon as weaker than the Kārakavibhaktis; cf. उपपदविभक्तेः कारकविभक्तिर्बलीयसी Pari. Śek. Pari.94. The topic explaining Kārakavibhaktis is looked upon as a very important and difficult chapter in treatises of grammar and there are several small compendiums written by scholars dealing with kārakas only. For the topic of Kārakas see P. I. 4.23 to 55, Kat, II. 4.8-42, Vyākaraṇa Mahābhāṣya Vol. VII. pp.262-264 published by the D. E. Society, Poona.