1. Exerting force or influence
   "the law is already in effect (or in force)"
   - effective, good, in effect

See also: operative

• abridgment
• Afropavo congensis
• AFSPC
• aft
• after
• after a fashion
• after all
• after part
• after-hours
• after-school
• afterbirth
• afterburner
• aftercare
• afterdamp
• afterdeck
• aftereffect
• afterglow
• afterimage
• afterlife
• aftermarket
• aftermath
• aftermost
• afternoon
• afternoon tea
• afterpains