1. multiplied by ninety; ninety times as great or as many

1. to a degree or extent ninety times as great; in ninety ways or directions

Examples

• The investment returned a ninetyfold profit over the decade.
• The population increased ninetyfold during the industrial boom.
• He was willing to forgive ninetyfold, showing remarkable patience.
• The damage was ninetyfold worse than initially reported.
• The recipe calls for a ninetyfold reduction in salt compared to the original version.