1. With economy.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• economicaly,
• ecconomically,
• ecomonically,
• econimacally,
• economicly,
• econonically,
• economially,
• economiccly,
• economicially,
• economincally,
• ecnomically,
• ecomomically,
• economicallly,
• econmicaly,
• economiclly,
• econimcally,
• econimically,
• econoically,
• ecomically,
• econmically

• economic aid,
• economise,
• economic theory,
• Economist,
• econometrist,
• economiser,
• economic expert,
• economic growth,
• economic crisis,
• economize,
• economic system,
• econometric,
• econometrics,
• economic value,
• economizer,
• economical,
• economic policy,
• economics,
• economic rent.

The adjective form of the word "economically" is "economic".