1. having two parts or aspects; double
2. twice as great or as much

1. in a twofold manner; doubly

Examples

• The plan has a twofold purpose: to save money and improve efficiency.
• Sales increased twofold after the new marketing campaign.
• The problem is twofold: lack of funding and poor management.
• Her responsibilities grew twofold when she became department head.
• The benefits of exercise are twofold: physical and mental health.
• Production costs have risen twofold since last year.
• The research serves a twofold function in our study.