From Wiktionary, the free dictionary
Borrowed from Sanskrit निष्कलंकता (niṣkalaṃkatā); By surface analysis, നിഷ്- (niṣ-) + കളങ്കത (kaḷaṅkata).
നിഷ്കളങ്കത • (niṣkaḷaṅkata)
- innocence; unaware of serious or sensitive issues
- lack of intention to harm or damage.