1. In actuality or reality or fact
   "in effect, they had no choice"
   - effectively

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

See also: operative

• backstabber
• backstage
• backstair
• backstairs
• backstay
• backstitch
• backstop
• backstory
• backstroke
• backstroker
• backswept
• backswimmer
• backswing
• backsword
• backtalk
• backtrack
• backup
• backup man
• backward
• backward and forward
• backwardly
• backwardness
• backwards
• backwash
• backwater