The best replacement for injunction is restraining order.

The best alternatives to injunction are rated as following:
★★★★★  restraining order
★★★★  specific performance
★★★★  damages
★★  temporary restraining order
★★  interdict
★  mandamus
★  tro
★  non molestation order
★  cease and desist
★  stay
★  enjoin
★  undertaking
  restraining
  specific performance)
  preliminary injunction
  injunctions

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Speaking about injunction, one probably shouldn't forget about notice.

Other search terms related to injunction and their ratings are:
★★★★★ notice
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injunction
restraining order
specific performance