I checked for "upleveled" in Google Ngram Viewer ( https://books.google.com/ngrams/ https://books.google.com/ngrams/ ) Although the word alone is found, there

I checked for "upleveled" in Google Ngram Viewer ( https://books.google.com/ngrams/ https://books.google.com/ngrams/ ) Although the word alone is found, there are zero matches for it combined with various articles and determiners: >Ngrams not found: upleveled a, upleveled the, upleveled fewer, upleveled less, upleveled more, upleveled fewest, upleveled least >Ngrams not found: upleveled most, upleveled this, upleveled that, upleveled these, upleveled those, upleveled each, upleveled every >Ngrams not found: upleveled any, upleveled some, upleveled either, upleveled neither, upleveled enough, upleveled sufficient >Ngrams not found: upleveled what, upleveled which, upleveled you, upleveled all, upleveled both, upleveled certain, upleveled several >Ngrams not found: upleveled various, upleveled few, upleveled little, upleveled many, upleveled much >Ngrams not found: upleveled my, upleveled his, upleveled her, upleveled its, upleveled our, upleveled their, upleveled your This suggests all the supposed matches for the word alone could be OCR errors or typos. If "upleveled" is a real word it's so rare that it has no place in any writing that you expect to be broadly understood.