en çok, çoğunlukla

listen to the pronunciation of en çok, çoğunlukla
Турецкий язык - Английский Язык
principally
{a} chiefly, above all, above the rest
Principally means more than anything else. This is principally because the major export markets are slowing = chiefly, mainly. mainly
essentially, mainly, primarily, mostly
In a principal manner; primarily; above all; chiefly; mainly
for the most part; "he is mainly interested in butterflies"
In a primary manner; pertaining to the principal of a matter