ninefold

adjective

1. nine times as great or as much.
2. having nine elements or parts.

adverb

3. in a ninefold manner or measure; to or by nine times as much: to increase one’s income ninefold.

adjective

1. equal to or having nine times as many or as much
2. composed of nine parts

adverb

3. by or up to nine times as many or as much

Old English nigonfeald; see nine + -fold.