Synonyms of principally

2 Syllables

broadly, mainly, mostly, chiefly

3 Syllables

copiously, largely, vitally, notably

4 Syllables

especially, materially, cardinally, eminently, preeminently, supremely, liberally, imposingly, importantly, dominantly, prevailingly, prevalently, commodiously, essentially, primarily, prodigiously, basically, substantially, generally, prodigally, surprisingly, peculiarly, explicitly

5 Syllables

unaccountably, expansively, fundamentally, predominantly, universally, extravagantly, voluminously, particularly

6 Syllables

determinately, superlatively, uncustomarily, comprehensively, immoderately