The affix ilac also comes in the sense of matup after the prātipadika (Nominal Stems) tunda etc.,
The force of च is that इनि, ठन् and मतुप् also come. As तुन्दिलः, तुन्दी, तुन्दिकः, तुन्दवान्. Similarly उदरिलः, उदरी, उदरिकः, उदरवान् ॥
The following is the list of तुन्दादि words 1 तुन्द, 2 उदर, 3 पिचण्ड, 4 घट, 5 यव, 6 व्रीहि, 7 स्वाङ्गाद्विवृद्धौ च ॥ That is to say, the affix इलच् comes after words denoting parts of one's body, when the largeness (विवृद्धि) of those organs is implied : as विवृद्धौ कर्णौ यस्य स = कार्णलः, कर्णी, कर्णिकः, कर्णवान् ॥,