kilissati : [kilis + ya] becomes soiled or stained; is impure.
 

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Kilissati [Sk. kliśyati=kliś or śliṣ to adhere, cp. P. kheḷa and silesuma or semha, Sk. śleṣma, slime. Same root as Gr. lei/mac snail; Ags. slīm slime. Another, specifically Pali, meaning is that of going bad, being vexed, with ref. to a heated state. This lies at the bottom of the Dhtp. (445) & Dhtm. (686) expln by upatāpe.] 1. to get wet, soiled or stained, to dirty oneself, be impure It 76 (of clothes, in the passing away of a deva); Th 1, 954 (kilisissanti, for kilissanti); Ps i.130. Kilisseyya Dh 158 (expld as nindaŋ labhati) to do wrong. Cp. pari˚.

Pali-English Dictionary, TW Rhys Davids, William Stede,

kilissati([kliś]): 污染{pp. kiliṭṭha; 單3opt. kilisseyya}

巴漢辭典 編者：(斗六) 廖文燦