Synonyms of mostly

2 Syllables
broadly, firstly, mainly, chiefly, often
3 Syllables
copiously, usually, frequently, largely, overall
4 Syllables
liberally, importantly, regularly, routinely, habitually, typically, dominantly, prevalently, prevailingly, commodiously, essentially, primarily, prodigiously, basically, imposingly, generally, prodigally, principally
5 Syllables
customarily, predominantly, expansively, voluminously, extravagantly, particularly
6 Syllables
comprehensively, immoderately