"Сугубо" - прекрасное литературное слово, good Russian. Не надо специально делать язык примитивным.

Valda, I think this word is too complicated for you at the moment. There are a lot of the nuances.
Особенно can be "especially" and "particularly". Сугубо is closer to "strictly" or "purely", and usually implies an object.