Real Etymology of English word ' fuck'

The etymology of the English word 'fuck' has been a matter of discussion by the etymologists for long.The extant findings in the matter is as under:

Wikipedia:The Oxford English Dictionary states that the ultimate etymology is uncertain, but that the word is "probably cognate" with a number of native Germanic words with meanings involving striking, rubbing, and having sex or is derivative of the Old French word that meant "to fuck".[7]

Etymonline:"to have sexual intercourse with" (transitive), until recently a difficult word to trace in usage, in part because it was omitted as taboo by the editors of the original OED when the "F" entries were compiled (1893-97). Johnson also had excluded the word, and fuck wasn't in a single English language dictionary from 1795 to 1965."

Huffington Post says’ It first appears, though, only in the 16th century, in a manuscript of the Latin orator Cicero.’ 
Link: http://www.huffingtonpost.com /melissa-mohr/a-fcking-short-history-of_b_3352948.html 

World Wide  Words says’It is often classed as one of the archetypal Anglo-Saxon four-letter words, but it isn’t Anglo-Saxon — it’s not recorded until the fifteenth century. The first known appearance is in a Latin poem dated sometime before 1500 that satirises the Carmelite friars of Cambridge. It includes the line Non sunt in coeli, quia gxddbov xxkxzt pg ifmk. The code can easily be broken to read Non sunt in coeli, quia fvccant vvivys of heli. Being translated, this says “They are not in heaven because they fuck wives of Ely”. Fuccant (in modern spelling) looks like Latin, but it’s a humorous fake — fuck is actually Germanic, related to Middle Dutch fokken, Norwegian fukka and Swedish focka.”

Link: http://www.worldwidewords.org/qa/qa-fuc1.htm

Comments:

An analysis of the fore-going findings leaves one with only one thing clear .It is the 'clear'uncertainty on the roots of this word.Moreover,it is highly improbable that no  word for such an act was used till late 16^th century while the act of ‘fucking’ should be as old as mankind !The attributed source language Germanic is quite a young language (Circa 350 AD)and could not,probably have been the original source of the word for ‘fuck’ which ‘act’ should have been 1000s of years old.

So,what then is the real etymology of the word’fuck’?

Often we look for gold in far off places  like Bolivia but end up finding it in  our neighbouring field of Jones!Who knows ,you may find gold  there,if only you dig there!Our problem is ‘we cut our perimeter  and refuse to step out of it’even if there are reasons to step out.

I stepped out!And found some gold!

Yes !I found  the roots !

After intense research,I  hit on a particular language.Lets call it as X language ,for covenience sake.This X language has one word’okka’ which means’to sexually unite’ .This root is derived from'Okkam' meaning'enlarged/erect (penis)'The word 'okka' is,probably formed by the sound of ‘intensive intercourse’ which is’okku,okku,okku….’as an onomatopoeic sort of formation.Dogs make this kind of sound while performing intercourse.Even now ,people speaking this X language call women for ‘okka’(intercourse) as a vulgar usage.They use it in curse language also,like ‘ammavai okka’ meaning’fuck your mother’.’’Thayoli’ means’mother fucker’ in X language. The Sanskrit word ‘Yoga’ is derived from this word ‘Okham’ஓக்க(verb) ,ஓகம் (noun) which means ‘to unite’ or ‘to fuse together’ as in a sexual intercourse.

The English word ’fuck’ is a modified derivative of this word'Okka'. Okka>Oga>‘Yoga’ is nothing but‘union with Siva’ in the ultimate,after invoking ‘Kundalini’ .Hence the word. The word has corrupted into ‘Bogam’போகம் also which is used to refer to ‘enjoyment’ or ‘harvest’result of the union.'Rajabogam'is 'royal enjoyment'

3 Bogam of paddy ,means 3 harvests in X language.’Vaibhogam’(celebration) is another connected word.

In X language ,a 'fortunate person' is called’Yogakkaran’(Lucky fucker)It also appears that the English word'yoke' is a corrupt modification of this word.

Which is that X Language?

This X language is much older than Germanic and Greek.Many words from X language are found in Greek language,as well.

And the X language is ……none other than Tamil,the oldest surviving spoken language of the world. 
The etymology of the word ‘fuck’ is no more uncertain,with so much of collateral support !Tamil is known to be related to greek already,with many common words.

For more ,on Greek-Tamil links,please read Athi S Sundar's answer to Greek Tamil genetic links .