1. To a crucial degree
   "crucially important"; "crucially, he must meet us at the airport"

See also: crucial

• feculent
• fecund
• fecundate
• fecundation
• fecundity
• Fed
• fed up
• fedayeen
• Fedayeen Saddam
• fedelline
• federal
• federal agency
• federal agent
• Federal Aviation Agency
• Federal Bureau of Investigation
• Federal Bureau of Prisons
• Federal Communications Commission
• federal court
• federal deficit
• Federal Democratic Republic of Ethiopia
• federal department
• Federal Deposit Insurance Corporation
• federal district
• Federal Emergency Management Agency
• federal government