Beyond the etymological relationship between and semantic closeness of kilesa and upakkilesa (e.g., see Rhys Davids & Stede, 1921–25, p. 139, entry for upakkilesa at [1]), the below-referenced Samyutta Nikaya collection entitled "Kilesa-saṃyutta" (SN 27) does not use kilesa in its actual suttas but, in fact, upakkilesa. Bodhi (2000), pp. 1012–14, 1100 n. 273, specifically makes note of the lexical differences between these two Pali words and chooses to translate kilesa as "defilement" and upakkilesa as "corruption." Similar, in Bodhi (2000), p. 1642, SN 47.12, upakkilesa is translated as "corruption" whereas, as indicated below, in Bodhi (2005), p. 416, this same Pali word in the same sutta is translated as "defilement." Consistent with Bodhi (2005), as seen below, Thanissaro (1994) also translates upakkilesa as "defilement."
The related correlate sankilesa (or saṅkilesa) is also translated as "defilement" by Bodhi (e.g., 2000, pp. 903–4; 2005, pp. 55–6), Thanissaro (2004) and Rhys Davids & Stede (1921-5, entry for "Sankilesa"). In SN 22.60 (Bodhi, 2000, pp. 903–4), sankilesa is contextualized by: "By being enamoured with [form], [beings] are captivated by it, and by being captivated by it they are defiled." In this sutta, sankilesa is juxtaposed with purification (visuddhi) which is contextualized by: "Experiencing revulsion [in the impermanence of form's pleasure], [beings] become dispassionate, and through dispassion they are purified."
SN 27.1 (trans. Thanissaro, 1994). Note that the phrase that Thanissaro translates as "defilement of awareness" here is cetaso upakkileso; Bodhi (2000), p. 1012, simply translates this as "mental corruption" (underlining added for clarity).
Beyond the etymological relationship between and semantic closeness of kilesa and upakkilesa (e.g., see Rhys Davids & Stede, 1921–25, p. 139, entry for upakkilesa at [1]), the below-referenced Samyutta Nikaya collection entitled "Kilesa-saṃyutta" (SN 27) does not use kilesa in its actual suttas but, in fact, upakkilesa. Bodhi (2000), pp. 1012–14, 1100 n. 273, specifically makes note of the lexical differences between these two Pali words and chooses to translate kilesa as "defilement" and upakkilesa as "corruption." Similar, in Bodhi (2000), p. 1642, SN 47.12, upakkilesa is translated as "corruption" whereas, as indicated below, in Bodhi (2005), p. 416, this same Pali word in the same sutta is translated as "defilement." Consistent with Bodhi (2005), as seen below, Thanissaro (1994) also translates upakkilesa as "defilement."
The related correlate sankilesa (or saṅkilesa) is also translated as "defilement" by Bodhi (e.g., 2000, pp. 903–4; 2005, pp. 55–6), Thanissaro (2004) and Rhys Davids & Stede (1921-5, entry for "Sankilesa"). In SN 22.60 (Bodhi, 2000, pp. 903–4), sankilesa is contextualized by: "By being enamoured with [form], [beings] are captivated by it, and by being captivated by it they are defiled." In this sutta, sankilesa is juxtaposed with purification (visuddhi) which is contextualized by: "Experiencing revulsion [in the impermanence of form's pleasure], [beings] become dispassionate, and through dispassion they are purified."
See Rhys Davids & Stede (1921–5), pp. 216–7, entry for "Kilesa," retrieved 2008-02-09 from "University of Chicago" at [2].
Cf. the paracanonicalNettipakaraṇa's "round of suffering, round of action, round of defilements" (dukkhavaṭṭo kammavaṭṭo kilesavaṭṭo) (Nett. i.95)."Archived copy". Archived from the original on 2011-07-19. Retrieved 2008-07-16.{{cite web}}: CS1 maint: archived copy as title (link)
Cf. the paracanonicalNettipakaraṇa's "round of suffering, round of action, round of defilements" (dukkhavaṭṭo kammavaṭṭo kilesavaṭṭo) (Nett. i.95)."Archived copy". Archived from the original on 2011-07-19. Retrieved 2008-07-16.{{cite web}}: CS1 maint: archived copy as title (link)