mostly
1. [ adverb ] in large part; mainly or chiefly
Synonyms: largely for_the_most_part
Examples:

"These accounts are largely inactive"

Related terms: most most
2. [ adverb ] usually; as a rule
Synonyms: generally more_often_than_not by_and_large
Examples:

"by and large it doesn't rain much here"

Similar spelling:   moistly
  Mosteller