The best replacement for danger is hazard.

The best alternatives to danger are rated as following:
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★★★★★  warning
★★★★  risk
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★★★  threat
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★★  caution
★★  peril
★★  jeopardy
★  ray j
★  terri gold
★  ruby woo
★  harm
★  cindy rogers
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★  dangerous
★  hostile fire pay
★  otachi
  leatherback
  optimus prime
  endangered
  knifehead
  immediate danger
  hollis

Your alternative for danger is not listed? Suggest!
Speaking about danger, one probably shouldn't forget about grainger.

Other search terms related to danger and their ratings are:
★★★★★ grainger
★★ ray j
★ ray j baby
★ neti pot
You have in mind a companion for danger and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of danger in all years. Click on graph for more.
danger
hazard
warning