Is this English?
Yes: archaic English. For instance, the King James Bible has a line that goes, "Thou shalt not live; for thou speakest lies in the name of the LORD".
@Ricardo14
It means "You speak." where 'you' is singular. It is archaic, though with this spelling it is considered Early Modern English (still ISO 639-3 ENG), and not Middle English [ENM]. For it to be Middle English, it would have to be of the form "Þou/þu/tu/þeou spækest/spekest" (though 'th' can replace 'þ', it wasn't common until the late 14th century)
https://en.wiktionary.org/wiki/...Middle_English
As for usage, use this only as a joke, or around Renaissance fairs:
https://en.wikipedia.org/wiki/Renaissance_fair
گالد ئے نبشت
لیسن: CC BY 2.0 FRلاگ
اے گالِد بندات ءَ گالِد939034#
ءِ گیش کرتگینEaldwimor،January 26, 2014
ءِ کڑی کرتگینEaldwimor،January 26, 2014
ءَ رِدگ کتگ Ealdwimor،January 26, 2014
ءِ کڑی کرتگینPaulP،September 9, 2014
ءِ کڑی کرتگینPaulP،September 9, 2014
ءَ رِدگ کتگ PaulP،September 9, 2014
ءِ کڑی کرتگینpolyglotti،September 11, 2014
ءِ کڑی کرتگینpolyglotti،September 11, 2014
ءِ کڑی کرتگینHorus،January 20, 2015
ءِ کڑی کرتگینSistemas،January 11, 2016
ءِ کڑی کرتگینThanuir،April 10, 2019
ءِ کڑی کرتگینThanuir،April 10, 2019
ءِ کڑی کرتگینThanuir،April 10, 2019
ءِ کڑی کرتگینThanuir،April 10, 2019
ءِ کڑی کرتگینLebad،June 18, 2020