Этимологический словарь санскрита

[Mārcis Gasūns]

Диакритики плавают, но отличный ресурс по этимологиям, несколько сотен достоверных санскритских тоже для славянофилов среди нас. Родственные с русскими словами санскритские можно наскрести через русский и церкославянские языки.

https://www.etymonline.com/word/para- para-(1)
before vowels, par-, word-forming element of Greek origin, "alongside, beyond; altered; contrary; irregular, abnormal," from Greek para- from para (prep.) "beside, near; issuing from; against, contrary to" (from PIE *prea, from root *per- (1) "forward," hence "toward, near; against").

It is cognate with Old English for- "off, away." Originally in English in Greek-derived words; it has been active in English mostly in scientific and technical words, but until recently was not usually regarded as a naturalized formative element in English.

https://www.etymonline.com/word/*per-#etymonline_v_52721 *per-(1)
Proto-Indo-European root forming prepositions, etc., meaning "forward," and, by extension, "in front of, before, first, chief, toward, near, against," etc.