The best replacement for interrupt is polling.

The best alternatives to interrupt are rated as following:
★★★★★  polling
★★★★  trap
★★  exception
★★  system call
★★  disrupt
★  interject
★  signal
★  disturb
★  interrupt
★  software interrupt
★  intrude
★  context switch
  notify
  polling software
  pooling
  hardware interrupt
  abort
  subroutine
  isa interrupt

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interrupt
polling
trap