1. Involving four parties
   - four-party

See also: many-sided, multilateral

• follower
• followers
• Followers of the Phrophet
• following
• followup
• folly
• Folsom culture
• foment
• dethronement
• detick
• detinue
• detonate
• detonating device
• detonating fuse
• detonation
• detonative
• detonator
• detour
• detox
• detoxicate
• detoxification
• detoxify
• detract
• detraction
• detractive