Etymologically Reconstructed Hindi words

Several of them are already common words. They are there just for common knowledge.

Aberration: अनर्सता
Algorithm: कलनविधि *
Computer: संगणक *
Nihilism: निहिलता
Program: अग्रलेख

शायद अछ्छा होगा अगर शब्दों के इस तरह बन जाने के पीछे के कारण भी बताता चलूँ |
Surreptitious:
Surreptitious comes from the Latin surrepticius"stolen, furtive, clandestine".
Surrepticius <- surreptus <- surripere"seize secretly" <- sub(from under/secretly)+rapere( to snatch )
Rapere comes from the PIE ( Proto-Indo-European ) root *Rep- , where * denotes that this is a reconstructed prefix.
*Rep- may have a direct descendant in Sanskrit. Sanskrit evolved earlier than most European languages and is closer to the PIE roots than many other Indo-European languages which depend heavily on Latin/Greek for their vocabulary.

Sub can be उप in Sanskrit/Hindi.

A proposed word in hindi then for Surreptitious is उप + रप + क or उप + रप + इय |
Surreptitious: उपरापक
Surreptitiously:उपरापकता से
Surreptitiousness: उपरापकता

Thats fundoo reconstruction :)