The word "markest" is not a correct spelling in Standard English. There is no sound "k" at the end of the word "market." In IPA transcription, the correct pronunciation of "market" is /ˈmɑːkɪt/ or MAHR-kit. The "r" sound is pronounced with a slight emphasis, similar to how it is pronounced in American English. Double-checking spelling is important in written communication to ensure that thoughts are conveyed accurately and effectively. Use online resources or dictionaries to assist with spelling uncertainties.
The word markest does not have an etymology on its own as it seems to be a typographical error or a misspelling. However, if you are referring to the word market, then its etymology can be traced back to the Old English word marcet or mearcet, which meant a meeting or a gathering. It ultimately originates from the Latin word mercatus, meaning a trading place or market.