Definition: marked with the mute letter क् which is applied by Pāṇini to affixes, for preventing guṇa and vṛddhi substitutes to the preceding इक् vowel (इ, उ, ऋ or लृ); cf.क्ङिति च, Pāṇ. I.1.5; (2) considered or looked upon as marked with mute indicatory क् for preventing guna; cf. असंयोगाल्लिट् कित् and the following P.I.2.5 etc. The affixes of the first type are for instance क्त, क्त्वा, क्तिन् and others. The affixes of the second type are given mainly in the second pada of the first Adhyāya by Pāṇini. Besides the prevention of guṇa and wrddhi, affixes marked with कु or affixes called कित्, cause Saṁprasāraṇa (see P. VI.1.15,16), elision of the penultimate न् (P.VI.4.24), elision of the penultimate vowel (P. VI.4.98,100), lengthening of the vowel (VI.4.15), substitution of ऊ (VI.4.19,21), elision of the final nasal (VI. 4.37), substitution of अI (VI.4.42). The taddhita affixes which are marked with mute क् cause the Vṛddhi substitute for the first vowel in the word to which they are added.